332354 + Interview Questions in Secondary School in Math Page 179 InterviewSolution

8901.	X²-2x+2(3-x)=0 is a quadratic equation?
Answer» QUESTION-; x²-2x+2(3-x)=0 is a quadratic equation? SOLUTION-; x²- 2x + 2 (3 - x) ⇒ x² - 2x = -6 + 2x ⇒ x² - 4X + 6 = 0 It is of the form ax2 + BX + C = 0. It is of the form ax2 + bx + c = 0.Hence, the given equation is quadratic equation.

8901.

X²-2x+2(3-x)=0 is a quadratic equation?

Answer»

QUESTION-;

x²-2x+2(3-x)=0 is a quadratic equation?

SOLUTION-;

x²- 2x + 2 (3 - x)

⇒ x² - 2x = -6 + 2x

⇒ x² - 4X + 6 = 0

It is of the form ax2 + BX + C = 0.

It is of the form ax2 + bx + c = 0.Hence, the given equation is quadratic equation.

Discussion

8902.	. If A={2,3,{4}} , then number of elements in P(A) is equal to: *
Answer» Given : A={2,3 4} To Find : number of ELEMENTS in P(A) SOLUTION: A={2,3 4} n(A) = 3 P(A) = 2³ = 8 number of elements in P(A) = 8 LEARN More: Th E set P = {x \| x ∈Z , –1< x < 1} is a (a) Singleton set (b) POWER ... brainly.in/question/4193803 If number of proper subsets of a set is 63, then the number of ... brainly.in/question/11531153

8902.

. If A={2,3,{4}} , then number of elements in P(A) is equal to: *

Answer»

Given : A={2,3 4}

To Find : number of ELEMENTS in P(A)

SOLUTION:

A={2,3 4}

n(A) = 3

P(A) = 2³ = 8

number of elements in P(A) = 8

LEARN More:

Th E set P = {x | x ∈Z , –1< x < 1} is a (a) Singleton set (b) POWER ...

brainly.in/question/4193803

If number of proper subsets of a set is 63, then the number of ...

brainly.in/question/11531153

Discussion

8903.	वस्तूचे मापन करता येत नाय कारन
Answer» ANSWER: पदार्थाचे वस्तुमान व पदार्थाचे वजन यांमध्ये थोडासा फरक आहे. एखाद्या पदार्थाचे वजन म्हणजे तो पदार्थ ज्या गुरुत्वीय क्षेत्रात असेल, त्या गुरुत्वीय क्षेत्राने पदार्थावर लावलेले गुरुत्वाकर्षण बल होय. वस्तू कितीही सूक्ष्म असली, तरी त्या वस्तूला काहीतरी वस्तुमान हे असतेच आणि वस्तुमान असले म्हणजे वजनही असतेच. वस्तुमानच नाही अशी कोणतीही वस्तू अस्तित्वात नाही. स्थानपरत्वे वजन बदलू शकते कारण स्थानपरत्वे गुरूत्वाकर्षण बदलू शकते. परंतु विश्वात त्या पदार्थाचे वस्तुमान मात्र आहे तेच निश्चित राहते. त्यात कोणताही बदल होत नाही. गुरुत्वाकर्षण बल सारखे असेल, तर वस्तुमानाच्या समप्रमाणात वजन

8903.

वस्तूचे मापन करता येत नाय कारन

Answer»

ANSWER:

पदार्थाचे वस्तुमान व पदार्थाचे वजन यांमध्ये थोडासा फरक आहे. एखाद्या पदार्थाचे वजन म्हणजे तो पदार्थ ज्या गुरुत्वीय क्षेत्रात असेल, त्या गुरुत्वीय क्षेत्राने पदार्थावर लावलेले गुरुत्वाकर्षण बल होय. वस्तू कितीही सूक्ष्म असली, तरी त्या वस्तूला काहीतरी वस्तुमान हे असतेच आणि वस्तुमान असले म्हणजे वजनही असतेच. वस्तुमानच नाही अशी कोणतीही वस्तू अस्तित्वात नाही. स्थानपरत्वे वजन बदलू शकते कारण स्थानपरत्वे गुरूत्वाकर्षण बदलू शकते. परंतु विश्वात त्या पदार्थाचे वस्तुमान मात्र आहे तेच निश्चित राहते. त्यात कोणताही बदल होत नाही. गुरुत्वाकर्षण बल सारखे असेल, तर वस्तुमानाच्या समप्रमाणात वजन

Discussion

8904.	Solvethefollowing differentd²y/dx-3 dy/dx + 2y= e³x
Answer» ANSWER: jgfghklouoiiuuuyyytrrsssd

8904.

Solvethefollowing differentd²y/dx-3 dy/dx + 2y= e³x

Answer»

ANSWER:

jgfghklouoiiuuuyyytrrsssd

Discussion

8905.	Simplify each of the following?please answer me this is urgent question please.
Answer» Answer: dear ARJUN QUESTION PLEASE SIMPLY if each other

8905.

Simplify each of the following?please answer me this is urgent question please.

Answer»

Answer:

dear ARJUN QUESTION PLEASE SIMPLY if each other

Discussion

8906.	Out of 36m1. To stich a pant Im 15cm cloth is neededcloth, how many parts can bestiched and how much cloth will remain ?
Answer» Step-by-step EXPLANATION: Draw a quadrilateral, which is PARALLELOGRAM of adjacent sides of 3cm and 4cm with the diagonal 5CM. Write steps of CONSTRUCTION

8906.

Out of 36m1. To stich a pant Im 15cm cloth is neededcloth, how many parts can bestiched and how much cloth will remain ?

Answer»

Step-by-step EXPLANATION:

Draw a quadrilateral, which is PARALLELOGRAM of adjacent sides of 3cm and 4cm with the diagonal 5CM. Write steps of CONSTRUCTION

Discussion

8907.	4) Ravi opens a recurring deposit account of Rs.800 per month at 7% p.a. If he receives Rs.20600 at the time of maturity, find the time in years for which the account was held.please give the correct answer, don't give unnecessary answer. Class 10 ICSE Banking.
Answer» <P> $\large\underline{\sf{Given- }}$ Ravi has an Recurring Deposit Account of Rs 800 per month. The rate of interest is 7 % p.a. He get Rs 20600 on the time of maturity. $\large\underline{\sf{To\:Find - }}$ Time in years. $\begin{gathered}\large{\sf{{\underline{Formula \: Used - }}}} \end{gathered}$ Amount on a certain sum of money of Rs P invested per month at the rate of r % per annum for n MONTHS is $\bold{ \red {\boxed{\text{Maturity value} = \text{nP} + \text{P} \times \dfrac{ \text{n(n + 1)}}{24} \times \dfrac{ \text{r}}{100} }}}$ $\red{\large\underline{\sf{Solution-}}}$ Given that, Ravi has an Recurring Deposit Account of Rs 800 per month. The rate of interest is 7 % p.a. He get Rs 20600 at the time of maturity. Let assume that the RD is deposited for n months. So, on SUBSTITUTING the values in the formula $\bold{ \red {\boxed{\text{Maturity value} = \text{nP} + \text{P} \times \dfrac{ \text{n(n + 1)}}{24} \times \dfrac{ \text{r}}{100} }}}$ We have, Sum deposited, P = Rs 800 Rate of interest, r = 7 % per annum Maturity Value = Rs 20600 $\rm :\longmapsto\:20600 = 800n + 800 \times \dfrac{n(n + 1)}{24} \times \dfrac{7}{100}$ $\rm :\longmapsto\:20600 = 800n + \dfrac{7}{3} n(n + 1)$ $\rm :\longmapsto\:61800 = 2400n + 7 {n}^{2} + 7n$ $\rm :\longmapsto\:7 {n}^{2} + 2407n - 61800 = 0$ Its a QUADRATIC equation in 'n', So, by using splitting of middle terms, we have $\rm :\longmapsto\:7 {n}^{2} + 2575n - 168n - 61800 = 0$ $\rm :\longmapsto\:n(7n + 2575) - 24(7n + 2575) = 0$ $\rm :\longmapsto\:(7n + 2575)(n - 24) = 0$ $\bf\implies \:n = 24$ So, Time = 2 years.

8907.

4) Ravi opens a recurring deposit account of Rs.800 per month at 7% p.a. If he receives Rs.20600 at the time of maturity, find the time in years for which the account was held.please give the correct answer, don't give unnecessary answer. Class 10 ICSE Banking.

Answer»

<P>

$\large\underline{\sf{Given- }}$

Ravi has an Recurring Deposit Account of Rs 800 per month.

The rate of interest is 7 % p.a.

He get Rs 20600 on the time of maturity.

$\large\underline{\sf{To\:Find - }}$

Time in years.

$\begin{gathered}\large{\sf{{\underline{Formula \: Used - }}}} \end{gathered}$

Amount on a certain sum of money of Rs P invested per month at the rate of r % per annum for n MONTHS is

$\bold{ \red {\boxed{\text{Maturity value} = \text{nP} + \text{P} \times \dfrac{ \text{n(n + 1)}}{24} \times \dfrac{ \text{r}}{100} }}}$

$\red{\large\underline{\sf{Solution-}}}$

Given that,

Ravi has an Recurring Deposit Account of Rs 800 per month.

The rate of interest is 7 % p.a.

He get Rs 20600 at the time of maturity.

Let assume that the RD is deposited for n months.

So, on SUBSTITUTING the values in the formula

$\bold{ \red {\boxed{\text{Maturity value} = \text{nP} + \text{P} \times \dfrac{ \text{n(n + 1)}}{24} \times \dfrac{ \text{r}}{100} }}}$

We have,

Sum deposited, P = Rs 800

Rate of interest, r = 7 % per annum

Maturity Value = Rs 20600

$\rm :\longmapsto\:20600 = 800n + 800 \times \dfrac{n(n + 1)}{24} \times \dfrac{7}{100}$

$\rm :\longmapsto\:20600 = 800n + \dfrac{7}{3} n(n + 1)$

$\rm :\longmapsto\:61800 = 2400n + 7 {n}^{2} + 7n$

$\rm :\longmapsto\:7 {n}^{2} + 2407n - 61800 = 0$

Its a QUADRATIC equation in 'n',

So, by using splitting of middle terms, we have

$\rm :\longmapsto\:7 {n}^{2} + 2575n - 168n - 61800 = 0$

$\rm :\longmapsto\:n(7n + 2575) - 24(7n + 2575) = 0$

$\rm :\longmapsto\:(7n + 2575)(n - 24) = 0$

$\bf\implies \:n = 24$

So,

Time = 2 years.

Discussion

8908.	Convert 9/10 and 13/8 to fraction with denominator 40
Answer» Step-by-step explanation: 9 by 10 and 13 by 8 and DENOMINATOR is 40

8908.

Convert 9/10 and 13/8 to fraction with denominator 40

Answer»

Step-by-step explanation:

9 by 10 and 13 by 8

and DENOMINATOR is 40

Discussion

8909.	Write the following as interval {x:x ∈ R, -4
Answer» $\huge\pink{\mid{\underline {\overline{\tt ❥︎A᭄ɴsᴡᴇʀ࿐✪}}\mid}}$ X ∈ (-4,6] Intervals are WRITTEN with rectangular BRACKETS or PARENTHESES, and two numbers delimited with a comma. The two numbers are called the endpoints of the interval. The number on the left denotes the least element or lower bound. The number on the RIGHT denotes the greatest element or upper bound. $\boxed{\fcolorbox{Blue}{Red}{\color{yellow}{hope\:it\:helps\: you}}}$ $\large\boxed{\fcolorbox{green}{blue}{\color{yellow}{MARK\:ME\:AS\: BRAINLIEST}}}$

8909.

Write the following as interval {x:x ∈ R, -4

Answer»

$\huge\pink{\mid{\underline {\overline{\tt ❥︎A᭄ɴsᴡᴇʀ࿐✪}}\mid}}$

X ∈ (-4,6]

Intervals are WRITTEN with rectangular BRACKETS or PARENTHESES, and two numbers delimited with a comma. The two numbers are called the endpoints of the interval. The number on the left denotes the least element or lower bound. The number on the RIGHT denotes the greatest element or upper bound.

$\boxed{\fcolorbox{Blue}{Red}{\color{yellow}{hope\:it\:helps\: you}}}$

$\large\boxed{\fcolorbox{green}{blue}{\color{yellow}{MARK\:ME\:AS\: BRAINLIEST}}}$

Discussion

8910.	In the adjoining figure, ABCD is a parallelogram and AX\|\|CY. prove that:(i) AED (ii) EAB (iii) reflex AEC
Answer» Answer: In . adjourning FIGURE AEd is a PARALLELOGRAM G and AX\|\|CY

8910.

In the adjoining figure, ABCD is a parallelogram and AX||CY. prove that:(i) AED (ii) EAB (iii) reflex AEC

Answer»

Answer:

In . adjourning FIGURE AEd

is a PARALLELOGRAM G and AX||CY

Discussion

8911.	In a pie chart, each sector represents a particular part of data and the magnitude of the sector is_______to the magnitude of the specific part of the data.
Answer» ANSWER: answer Step-by-step EXPLANATION: DATA

8911.

In a pie chart, each sector represents a particular part of data and the magnitude of the sector is_______to the magnitude of the specific part of the data.

Answer»

ANSWER:

answer

Step-by-step EXPLANATION:

DATA

Discussion

8912.	दो पुरुष और 3 लड़के एक काम को 8 दिन में कर सकते हैं और 3 पुरुष और 2 लड़के उसी काम को 7 दिन में कर सकते हैं तो एक पुरुष कितने लड़कों के समान कार्य कर सकता है
Answer» ANSWER: xdfgfasdddbgfdasewssssddd Step-by-step EXPLANATION: dsggffdfggfdshqvfdggggghg

8912.

दो पुरुष और 3 लड़के एक काम को 8 दिन में कर सकते हैं और 3 पुरुष और 2 लड़के उसी काम को 7 दिन में कर सकते हैं तो एक पुरुष कितने लड़कों के समान कार्य कर सकता है

Answer»

ANSWER:

xdfgfasdddbgfdasewssssddd

Step-by-step EXPLANATION:

dsggffdfggfdshqvfdggggghg

Discussion

8913.	If a:b = 3:4 ,b:c = 5:7 and the average of a, b, c is 21,what are the values of a, b, c
Answer» Step-by-step EXPLANATION: a:b3:4=15:20 B:c=5:7=20:28 a:b:c=15:20:28 a+b+c/3=21 a+b+c=63 15x+20x+28x=63 63x=63 x=1 then a=15,b=20,c=28 please MARK as BRAINLIST

8913.

If a:b = 3:4 ,b:c = 5:7 and the average of a, b, c is 21,what are the values of a, b, c

Answer»

Step-by-step EXPLANATION:

a:b3:4=15:20

B:c=5:7=20:28

a:b:c=15:20:28

a+b+c/3=21

a+b+c=63

15x+20x+28x=63

63x=63

x=1

then a=15,b=20,c=28

please MARK as BRAINLIST

Discussion

8914.	_________ + 9999= 40,000
Answer» Answer: 30,001 Step-by-step explanation: 40,000-9999= 30,001

8914.

_________ + 9999= 40,000

Answer»

Answer:

30,001

Step-by-step explanation:

40,000-9999= 30,001

Discussion

8915.	If f(x) = 4x^2+2x-3 and f(g^-1(x))= x^2+7x-9 then find g(1).
Answer» Answer: PLEASE subscribe my you TUBE CHANNEL Short tricks with Parth Agarwal you will get Short tricks of MATHEMATICS on my channel

8915.

If f(x) = 4x^2+2x-3 and f(g^-1(x))= x^2+7x-9 then find g(1).

Answer»

Answer:

PLEASE subscribe my you TUBE CHANNEL Short tricks with Parth Agarwal you will get Short tricks of MATHEMATICS on my channel

Discussion

8916.	5. If the given data is not equally spaced f interpolutionis near the end of data theninterpolationformula is used.a) Newton's backward differenceb) Neauton's forward differencec) Langrange'sd) None of these
Answer» Answer: a Step-by-step explanation: Newton – Gregory Forward Interpolation formula is given by f(X) = Y0 + nΔy0 + n(n-1)Δ2y0/2! + n(n-1)(n-2) Δ3y0 /3! + ….. This formula is obtained by the Newton’s Divided DIFFERENCE formula by substituting the intervals as h. This is done because we assume the intervals to be constant, that is, equally spaced. hope it is helpful pls MAKE me Brainlist

8916.

5. If the given data is not equally spaced f interpolutionis near the end of data theninterpolationformula is used.a) Newton's backward differenceb) Neauton's forward differencec) Langrange'sd) None of these

Answer»

Answer:

a

Step-by-step explanation:

Newton – Gregory Forward Interpolation formula is given by

f(X) = Y0 + nΔy0 + n(n-1)Δ2y0/2! + n(n-1)(n-2) Δ3y0 /3! + …..

This formula is obtained by the Newton’s Divided DIFFERENCE formula by substituting the intervals as h. This is done because we assume the intervals to be constant, that is, equally spaced.

hope it is helpful pls MAKE me Brainlist

Discussion

8917.	3. If A={2,3,{4}} , then number of elements in P(A) is equal to: *398164please answer my question with full explanation please
Answer» Answer: 551258569486 6848998*859852487%684848

8917.

3. If A={2,3,{4}} , then number of elements in P(A) is equal to: *398164please answer my question with full explanation please

Answer»

Answer:

551258569486 6848998*859852487%684848

Discussion

8918.	What is cubic plolynomial?
Answer» Answer: CUBIC POLYNOMIAL is a polynomial in which HIGHEST power is 3.

8918.

What is cubic plolynomial?

Answer»

Answer:

CUBIC POLYNOMIAL is a polynomial in which HIGHEST power is 3.

Discussion

8919.	If 1 / x = u then 170u = 37 / 10 then find the value of ( 1 / x ) x
Answer» ANSWER: HOPE this HELPS you....

8919.

If 1 / x = u then 170u = 37 / 10 then find the value of ( 1 / x ) x

Answer»

ANSWER:

HOPE this HELPS you....

Discussion

8920.	If the lines represented by ax + 2hxy+by² = 0 represents a pair of perpendicular lines ip. A) h=0 B) a+b=0
Answer» Step-by-step EXPLANATION: makaasmksksmdhsiq qjwnebsus6dld

8920.

If the lines represented by ax + 2hxy+by² = 0 represents a pair of perpendicular lines ip. A) h=0 B) a+b=0

Answer»

Step-by-step EXPLANATION:

makaasmksksmdhsiq qjwnebsus6dld

Discussion

8921.	Using divisibility rules, test the divisibility of 554785 by 11. Give reasons to support your answer
Answer» Answer: 39 is the answer Step-by-step EXPLANATION: ADD the ODD numbers5+4+8=17 add the EVEN numbers5+7+5=22 22+17=39

8921.

Using divisibility rules, test the divisibility of 554785 by 11. Give reasons to support your answer

Answer»

Answer:

39 is the answer

Step-by-step EXPLANATION:

ADD the ODD numbers5+4+8=17

add the EVEN numbers5+7+5=22

22+17=39

Discussion

8922.	4. Median of the data 23,16,12,14,19,12,14,13,14 is____
Answer» Answer: 19 HOPE it helpsssssssssss

8922.

4. Median of the data 23,16,12,14,19,12,14,13,14 is____

Answer»

Answer:

19 HOPE it helpsssssssssss

Discussion

8923.	Rationalize:3√2 -2√3 ---------------- 3√2 + 2√3 simple form:rationalize :3√2 -2√3 / 3√2 + 2√3
Answer» ANSWER: Rationalization factor of √3 is √3. Step-by-step explanation: GIVEN irrational number = √3 To find: Rationalization factor. Rationalization factor of a number is a number whose product with given number gives a rational number. Here we get a rational number when √3 is MULTIPLIED with √3. ⇒ √3 × √3 = 3. Therefore, Rationalization factor of √3 is √3.

8923.

Rationalize:3√2 -2√3 ---------------- 3√2 + 2√3 simple form:rationalize :3√2 -2√3 / 3√2 + 2√3

Answer»

ANSWER:

Rationalization factor of √3 is √3.

Step-by-step explanation:

GIVEN irrational number = √3

To find: Rationalization factor.

Rationalization factor of a number is a number whose product with given number gives a rational number.

Here we get a rational number when √3 is MULTIPLIED with √3.

⇒ √3 × √3 = 3.

Therefore, Rationalization factor of √3 is √3.

Discussion

8924.	The additive inserve of 3 is:
Answer» ANSWER: The ADDITIVE inserve of 3 is: (-3)

8924.

The additive inserve of 3 is:

Answer»

ANSWER:

The ADDITIVE inserve of 3 is: (-3)

Discussion

8925.	9. If equal ares are subtracted from equals the reminders are equal . T/F
Answer» Step-by-step explanation: If EQUALS are subtracted from the equals, then the REMAINDERS are also EQUAL. If things coincide with ONE another, then things are equal to one another. If things which are double of the same things, then things are equal to one another. please give braiist answer

8925.

9. If equal ares are subtracted from equals the reminders are equal . T/F

Answer»

Step-by-step explanation:

If EQUALS are subtracted from the equals, then the REMAINDERS are also EQUAL. If things coincide with ONE another, then things are equal to one another. If things which are double of the same things, then things are equal to one another.

please give braiist answer

Discussion

8926.	Write two factors on which resistance depends.
Answer» Answer: I don't know ans Step-by-step EXPLANATION: please MARK me as BRAINLY

8926.

Write two factors on which resistance depends.

Answer»

Answer:

I don't know ans

Step-by-step EXPLANATION:

please MARK me as BRAINLY

Discussion

8927.	If a number is divisible by 2 , then which of the following cannot be it's unit digit ?
Answer» ANSWER: ODD numbers. Step-by-step EXPLANATION:

8927.

If a number is divisible by 2 , then which of the following cannot be it's unit digit ?

Answer»

ANSWER:

ODD numbers.

Step-by-step EXPLANATION:

Discussion

8928.	Q.4 A random vector (X, Y, Z) has joint density given by. f (x, y,z) = k exp [− 1/2 (2x2 − 2xy + y2 + z2 + 2x − 6y) .1. Compute k.2. Compute the expectations P(X), P(Y ) and P(Z).3. Compute the density of the random vector (X, Z).4. Compute the correlation coeffificient between X and Z and between X and Y .5. Let W = X + Z; compute the probability density of W.
Answer» ANSWER: xyzxyzxyzxyzxyzxyzxyzxyz

8928.

Q.4 A random vector (X, Y, Z) has joint density given by. f (x, y,z) = k exp [− 1/2 (2x2 − 2xy + y2 + z2 + 2x − 6y) .1. Compute k.2. Compute the expectations P(X), P(Y ) and P(Z).3. Compute the density of the random vector (X, Z).4. Compute the correlation coeffificient between X and Z and between X and Y .5. Let W = X + Z; compute the probability density of W.

Answer»

ANSWER:

xyzxyzxyzxyzxyzxyzxyzxyz

Discussion

8929.	Customer deposited $ 1250 in his savings bank account. Find the Compound Interest (C.I.) earned by him after 3 years at the rate of 5% per annum.
Answer» Given : PRINCIPLE : $1250 Rate of INTEREST : 5% Time : 3 years To find : The COMPOUND interest. Solution : FIRST, we'll find the amount. $\sf \dashrightarrow Amount = Principle \bigg( 1 + \dfrac{Rate}{100} \bigg)^{Time}$ $\sf \dashrightarrow 1250 \bigg( 1 + \dfrac{5}{100} \bigg)^{3}$ $\sf \dashrightarrow 1250 \bigg( 1 + \dfrac{1}{20} \bigg)^{3}$ $\sf \dashrightarrow 1250 \bigg( \dfrac{20 + 1}{20} \bigg)^{3}$ $\sf \dashrightarrow 1250 \bigg( \dfrac{21}{20} \bigg)^{3}$ $\sf \dashrightarrow 1250 \bigg( \dfrac{21^3}{20^3} \bigg)$ $\sf \dashrightarrow 1250 \bigg( \dfrac{9261}{8000}\bigg)$ $\sf \dashrightarrow 5 \bigg( \dfrac{9261}{32}\bigg)$ $\sf \dashrightarrow \dfrac{9261 \times 5}{32} = \dfrac{46305}{32}$ $\sf \dashrightarrow \cancel \dfrac{46305}{32} = 1447.03125$ Now, we can find the compound interest. Compound interest : $\sf \dashrightarrow Amount - Principle$ $\sf \dashrightarrow 1447.03125 - 1250$ $\dashrightarrow$ ₹ $\sf 197.03125$ Hence, the compound interest is ₹197.03125.

8929.

Customer deposited $ 1250 in his savings bank account. Find the Compound Interest (C.I.) earned by him after 3 years at the rate of 5% per annum.

Answer»

Given :

PRINCIPLE : $1250

Rate of INTEREST : 5%

Time : 3 years

To find :

The COMPOUND interest.

Solution :

FIRST, we'll find the amount.

$\sf \dashrightarrow Amount = Principle \bigg( 1 + \dfrac{Rate}{100} \bigg)^{Time}$

$\sf \dashrightarrow 1250 \bigg( 1 + \dfrac{5}{100} \bigg)^{3}$

$\sf \dashrightarrow 1250 \bigg( 1 + \dfrac{1}{20} \bigg)^{3}$

$\sf \dashrightarrow 1250 \bigg( \dfrac{20 + 1}{20} \bigg)^{3}$

$\sf \dashrightarrow 1250 \bigg( \dfrac{21}{20} \bigg)^{3}$

$\sf \dashrightarrow 1250 \bigg( \dfrac{21^3}{20^3} \bigg)$

$\sf \dashrightarrow 1250 \bigg( \dfrac{9261}{8000}\bigg)$

$\sf \dashrightarrow 5 \bigg( \dfrac{9261}{32}\bigg)$

$\sf \dashrightarrow \dfrac{9261 \times 5}{32} = \dfrac{46305}{32}$

$\sf \dashrightarrow \cancel \dfrac{46305}{32} = 1447.03125$

Now, we can find the compound interest.

Compound interest :

$\sf \dashrightarrow Amount - Principle$

$\sf \dashrightarrow 1447.03125 - 1250$

$\dashrightarrow$ ₹ $\sf 197.03125$

Hence, the compound interest is ₹197.03125.

Discussion

8930.	Sin50°(√3-1)=1, how to prove both side?
Answer» ANSWER: an HOUR and later this quality 8we to send Step-by-step explanation: snsj is well NICKY bhai

8930.

Sin50°(√3-1)=1, how to prove both side?

Answer»

ANSWER:

an HOUR and later this quality 8we to send

Step-by-step explanation:

snsj is well NICKY bhai

Discussion

8931.	1² +2²+3² ++ (n − 1)² =
Answer» Step-by-step explanation: 1+4+9+(n-1)^2 =n^2+2n+33 hope HELPFUL

8931.

1² +2²+3² ++ (n − 1)² =

Answer»

Step-by-step explanation:

1+4+9+(n-1)^2 =n^2+2n+33

hope HELPFUL

Discussion

8932.	If log √2 [log2{log4(x-15)}] = 0 then x=
Answer» yagagsf sysgsg dhdhd Step-by-step EXPLANATION: gvdvdv hshddvdv uegrfe eheuegef

8932.

If log √2 [log2{log4(x-15)}] = 0 then x=

Answer»

yagagsf sysgsg dhdhd

Step-by-step EXPLANATION:

gvdvdv hshddvdv uegrfe eheuegef

Discussion

8933.	3) Solve the following quadratic equation and give your answer correct to two significant figures: x+1/2x+5=x+3/3x+4
Answer» $\large\underline{\sf{Solution-}}$ Given equation is $\rm :\longmapsto\:\dfrac{x + 1}{2x + 5} = \dfrac{x + 3}{3x + 4}$ $\rm :\longmapsto\:(x + 1)(3x + 4) = (x + 3)(2x + 5)$ $\rm :\longmapsto\:x(3x + 4) + 1(3x + 4) = x(2x + 3) + 5(x + 3)$ $\rm :\longmapsto\: {3x}^{2} + 4x + 3x + 4 = 2 {x}^{2} + 6x + 5x + 15$ $\rm :\longmapsto\: {3x}^{2} + 7x + 4 = 2 {x}^{2} + 11x + 15$ $\rm :\longmapsto\: {3x}^{2} + 7x + 4 - 2 {x}^{2} - 11x - 15 = 0$ $\rm :\longmapsto\: {x}^{2} - 4x - 11 = 0$ Its a quadratic in x and to solve this quadratic equation, we USE Quadratic Formula, which is given by $\red{\boxed{ \rm{ x = \dfrac{ - b \: \pm \: \sqrt{ {b}^{2} - 4ac} }{2a} }}}$ Here, $\red{\rm :\longmapsto\:a = 1}$ $\red{\rm :\longmapsto\:b = - 4}$ $\red{\rm :\longmapsto\:c = - 11}$ So, on substituting the values, we get $\rm :\longmapsto\:x = \dfrac{ - ( - 4) \: \pm \: \sqrt{ {( - 4)}^{2} - 4(1)( - 11)} }{2 \times 1}$ $\rm :\longmapsto\:x = \dfrac{4 \: \pm \: \sqrt{16 + 44} }{2 }$ $\rm :\longmapsto\:x = \dfrac{4 \: \pm \: \sqrt{60} }{2 }$ $\rm :\longmapsto\:x = \dfrac{4 \: \pm \: \sqrt{2 \times 2 \times 15} }{2 }$ $\rm :\longmapsto\:x = \dfrac{4 \: \pm \: 2\sqrt{ 15} }{2 }$ $\rm :\longmapsto\:x = \dfrac{2(1 \: \pm \: \sqrt{ 15} )}{2 }$ $\rm :\longmapsto\:x = 2 \: \pm \: \sqrt{15}$ Let evaluate now $\red{\rm :\longmapsto\: \sqrt{15}}$ $\red{\begin{gathered} \:\: \begin{array}{c\|c} {\underline{\sf{}}}&{\underline{\sf{\:\:3.872 \:\:}}}\\ {\underline{\sf{3}}}& {\sf{\:\:15.000000 \:\:}} \\{\sf{}}& \underline{\sf{\:\: \: \: \: \: \: \: \: \: 9 \: \: \: \: \: \: \: \: \: \: \: \:\:}} \\ {\underline{\sf{68}}}& {\sf{\:\: \: \: \: \: 600 \: \: \: \: \: \: \: \:\:}} \\{\sf{}}& \underline{\sf{\:\: \: 544 \: \: \: \: \: \: \:\:}} \\ {\underline{\sf{767}}}& {\sf{\:\:5600 \:\:}} \\{\sf{}}& \underline{\sf{\:\:5369\:\:}} \\ {\underline{\sf{7742}}}& {\sf{\:\: \: \: \: \: \: 23100\:\:}} \\{\sf{}}& \underline{\sf{\:\: \: \: \: \: \: 15484\:\:}} \\ {\underline{\sf{}}}& {\sf{\: \: \: \: \: \: \: 7616\:\:}}{\sf{}}&{\sf{\:\:\:\:}}\end{array}\end{gathered}}$ $\bf\implies \: \sqrt{15} = 3.872$ So, on substituting the value, we get $\rm :\longmapsto\:x = 2 \: \pm \: 3.87$ $\rm :\longmapsto\:x = 2 \: + \: 3.87 \: \: \: or \: \: \: 2 \: - \: 3.87$ $\bf :\longmapsto\:x = \: 5.87 \: \: \: or \: \: \: - \: 1.87$ Additional Information :- Nature of ROOTS :- Let us CONSIDER a quadratic equation ax² + bx + c = 0, then nature of roots of quadratic equation depends upon Discriminant (D) of the quadratic equation. If Discriminant, D > 0, then roots of the equation are real and unequal. If Discriminant, D = 0, then roots of the equation are real and equal. If Discriminant, D < 0, then roots of the equation are unreal or COMPLEX or imaginary. Where, Discriminant, D = b² - 4ac

8933.

3) Solve the following quadratic equation and give your answer correct to two significant figures: x+1/2x+5=x+3/3x+4

Answer»

$\large\underline{\sf{Solution-}}$

Given equation is

$\rm :\longmapsto\:\dfrac{x + 1}{2x + 5} = \dfrac{x + 3}{3x + 4}$

$\rm :\longmapsto\:(x + 1)(3x + 4) = (x + 3)(2x + 5)$

$\rm :\longmapsto\:x(3x + 4) + 1(3x + 4) = x(2x + 3) + 5(x + 3)$

$\rm :\longmapsto\: {3x}^{2} + 4x + 3x + 4 = 2 {x}^{2} + 6x + 5x + 15$

$\rm :\longmapsto\: {3x}^{2} + 7x + 4 = 2 {x}^{2} + 11x + 15$

$\rm :\longmapsto\: {3x}^{2} + 7x + 4 - 2 {x}^{2} - 11x - 15 = 0$

$\rm :\longmapsto\: {x}^{2} - 4x - 11 = 0$

Its a quadratic in x and to solve this quadratic equation, we USE Quadratic Formula, which is given by

$\red{\boxed{ \rm{ x = \dfrac{ - b \: \pm \: \sqrt{ {b}^{2} - 4ac} }{2a} }}}$

Here,

$\red{\rm :\longmapsto\:a = 1}$

$\red{\rm :\longmapsto\:b = - 4}$

$\red{\rm :\longmapsto\:c = - 11}$

So, on substituting the values, we get

$\rm :\longmapsto\:x = \dfrac{ - ( - 4) \: \pm \: \sqrt{ {( - 4)}^{2} - 4(1)( - 11)} }{2 \times 1}$

$\rm :\longmapsto\:x = \dfrac{4 \: \pm \: \sqrt{16 + 44} }{2 }$

$\rm :\longmapsto\:x = \dfrac{4 \: \pm \: \sqrt{60} }{2 }$

$\rm :\longmapsto\:x = \dfrac{4 \: \pm \: \sqrt{2 \times 2 \times 15} }{2 }$

$\rm :\longmapsto\:x = \dfrac{4 \: \pm \: 2\sqrt{ 15} }{2 }$

$\rm :\longmapsto\:x = \dfrac{2(1 \: \pm \: \sqrt{ 15} )}{2 }$

$\rm :\longmapsto\:x = 2 \: \pm \: \sqrt{15}$

Let evaluate now

$\red{\rm :\longmapsto\: \sqrt{15}}$

$\red{\begin{gathered} \:\: \begin{array}{c|c} {\underline{\sf{}}}&{\underline{\sf{\:\:3.872 \:\:}}}\\ {\underline{\sf{3}}}& {\sf{\:\:15.000000 \:\:}} \\{\sf{}}& \underline{\sf{\:\: \: \: \: \: \: \: \: \: 9 \: \: \: \: \: \: \: \: \: \: \: \:\:}} \\ {\underline{\sf{68}}}& {\sf{\:\: \: \: \: \: 600 \: \: \: \: \: \: \: \:\:}} \\{\sf{}}& \underline{\sf{\:\: \: 544 \: \: \: \: \: \: \:\:}} \\ {\underline{\sf{767}}}& {\sf{\:\:5600 \:\:}} \\{\sf{}}& \underline{\sf{\:\:5369\:\:}} \\ {\underline{\sf{7742}}}& {\sf{\:\: \: \: \: \: \: 23100\:\:}} \\{\sf{}}& \underline{\sf{\:\: \: \: \: \: \: 15484\:\:}} \\ {\underline{\sf{}}}& {\sf{\: \: \: \: \: \: \: 7616\:\:}}{\sf{}}&{\sf{\:\:\:\:}}\end{array}\end{gathered}}$

$\bf\implies \: \sqrt{15} = 3.872$

So, on substituting the value, we get

$\rm :\longmapsto\:x = 2 \: \pm \: 3.87$

$\rm :\longmapsto\:x = 2 \: + \: 3.87 \: \: \: or \: \: \: 2 \: - \: 3.87$

$\bf :\longmapsto\:x = \: 5.87 \: \: \: or \: \: \: - \: 1.87$

Additional Information :-

Nature of ROOTS :-

Let us CONSIDER a quadratic equation ax² + bx + c = 0, then nature of roots of quadratic equation depends upon Discriminant (D) of the quadratic equation.

If Discriminant, D > 0, then roots of the equation are real and unequal.

If Discriminant, D = 0, then roots of the equation are real and equal.

If Discriminant, D < 0, then roots of the equation are unreal or COMPLEX or imaginary.

Where,

Discriminant, D = b² - 4ac

Discussion

8934.	The silkworm spins cocoon in the pattern of _____. a)1 )6 c)0 d)8
Answer» ANSWER: OPTION D IS CORRECT! Step-by-step EXPLANATION: The SILK worm spins cocoon in the pattern of FIGURE 8.

8934.

The silkworm spins cocoon in the pattern of _____. a)1 )6 c)0 d)8

Answer»

ANSWER:

OPTION D IS CORRECT!

Step-by-step EXPLANATION:

The SILK worm spins cocoon in the pattern of FIGURE 8.

Discussion

8935.	. Two men A and B complete the work together in 7/24 days. The men A can take 2 day less to complete the work separately then man B. find the time in which each man can separately complete the work.
Answer» Answer: MAN A=2 1/2, man B = 4 1/2 Step-by-step EXPLANATION: I hope it will helps you Please mark me as BRAINLIEST

8935.

. Two men A and B complete the work together in 7/24 days. The men A can take 2 day less to complete the work separately then man B. find the time in which each man can separately complete the work.

Answer»

Answer:

MAN A=2 1/2, man B = 4 1/2

Step-by-step EXPLANATION:

I hope it will helps you

Please mark me as BRAINLIEST

Discussion

8936.	Solution set of the inequality 20x≤90 when x∈N, where N is a set of natural numbers, is{…,1,2,3,4}{…,1,2,3,4,4.5}{1,2,3,4,4.5}{1,2,3,4}
Answer» Given : 20x ≤90 x ∈N, where N is a set of natural NUMBERS To FIND : SOLUTION Set Solution: 20x ≤90 => 2x ≤ 9 => x ≤ 9 /2 x ∈N, where N is a set of natural numbers => x = 1 , 2 ,3 , 4 { 1, 2 , 3 , 4} is solution set for 20x ≤90 x ∈N, where N is a set of natural numbers Learn More: Solve the INEQUALITY \|X brainly.in/question/12424683 Solve the following inequality : [tex]displaystyle{dfrac{1-sqrt{21-4x ... brainly.in/question/12643551

8936.

Solution set of the inequality 20x≤90 when x∈N, where N is a set of natural numbers, is{…,1,2,3,4}{…,1,2,3,4,4.5}{1,2,3,4,4.5}{1,2,3,4}

Answer»

Given : 20x ≤90

x ∈N, where N is a set of natural NUMBERS

To FIND : SOLUTION Set

Solution:

20x ≤90

=> 2x ≤ 9

=> x ≤ 9 /2

x ∈N, where N is a set of natural numbers

=> x = 1 , 2 ,3 , 4

{ 1, 2 , 3 , 4} is solution set for 20x ≤90

x ∈N, where N is a set of natural numbers

Learn More:

Solve the INEQUALITY |X

brainly.in/question/12424683

Solve the following inequality : [tex]displaystyle{dfrac{1-sqrt{21-4x ...

brainly.in/question/12643551

Discussion

8937.	Add -2 by 5 and 3 by 4
Answer» Answer: 3,7 Step-by-step EXPLANATION: -2+5=3 3+4=7 I THINK it is CORRECT

8937.

Add -2 by 5 and 3 by 4

Answer»

Answer:

3,7

Step-by-step EXPLANATION:

-2+5=3

3+4=7

I THINK it is CORRECT

Discussion

8938.	3 [x3] < 5 [x - 5] text me
Answer» Answer: 3 [X3] < 5 [x - 5] ttex the DELIGHT off the delight

8938.

3 [x3] < 5 [x - 5] text me

Answer»

Answer:

3 [X3] < 5 [x - 5] ttex the DELIGHT off the delight

Discussion

8939.	A candidate attempted 12 questions and secured full marks in all of them. If he obtained 60% in the test and all questions carried equal marks, then what is the number of questions in the test? 36 30 25 20
Answer» ANSWER: 36 is the RIGHT answer for you QUESTION

8939.

A candidate attempted 12 questions and secured full marks in all of them. If he obtained 60% in the test and all questions carried equal marks, then what is the number of questions in the test? 36 30 25 20

Answer»

ANSWER:

36 is the RIGHT answer for you QUESTION

Discussion

8940.	Be Friends On IG Id:__krishnaa_21
Answer» Answer: sorry don't have TIME the PENINSULAR plateau is a tableland composed of the OLD CRYSTALLINE, IGNEOUS and metamorphic rocks

8940.

Be Friends On IG Id:__krishnaa_21

Answer»

Answer:

sorry don't have TIME

the PENINSULAR plateau is a tableland composed of the OLD CRYSTALLINE, IGNEOUS and metamorphic rocks

Discussion

8941.	Simplify each of the following?
Answer» DEAR I don't KNOW but then ALSO I am telling you TRY try but don't cry

Discussion

8942.	Factorise: (x-3y)² -8 (x-3y)-20
Answer» ANSWER: PLEASE MARK me BRAINLIST please

8942.

Factorise: (x-3y)² -8 (x-3y)-20

Answer»

ANSWER:

PLEASE MARK me BRAINLIST please

Discussion

8943.	Find the cardinal number of A2 = { x:x € N and 3《x 《7}
Answer» ANSWER: -8 is answer. Step-by-step explanation: Please GIVE your SUPPORT

8943.

Find the cardinal number of A2 = { x:x € N and 3《x 《7}

Answer»

ANSWER:

-8 is answer.

Step-by-step explanation:

Please GIVE your SUPPORT

Discussion

8944.	16 2. Express the following in exponential form. 20×20×20/19×19×19
Answer» Step-by-step EXPLANATION: this can be WRITTEN as 20^3/19^3 or can be written as (20/19)^3

8944.

16 2. Express the following in exponential form. 20×20×20/19×19×19

Answer»

Step-by-step EXPLANATION:

this can be WRITTEN as

20^3/19^3 or can be written as (20/19)^3

Discussion

8945.	How many polynomials are there exactly 4 & -2 as zeros
Answer» Answer: Polynomials are there having 4 and -2 as zeroes. To FIND: How MANY polynomials are there? Solution: If the zeros of a polynomial are given then it forms only one polynomial Step-by-step EXPLANATION:Answer: The required polynomial is Step-by-step explanation: Given: Polynomials are there having 4 and -2 as zeroes. To find: How many polynomials are there? Solution : If the zeros of a polynomial are given then it forms only one polynomial. The zeroes of the polynomial are 4 and -2 Let x is the variable so Factors are (x-4)(x+2) Now, we MULTIPLY the factors to get polynomial. The required polynomial is which has zeros 4 and -2.

8945.

How many polynomials are there exactly 4 & -2 as zeros

Answer»

Answer: Polynomials are there having 4 and -2 as zeroes. To FIND: How MANY polynomials are there? Solution: If the zeros of a polynomial are given then it forms only one polynomial

Step-by-step EXPLANATION:Answer:

The required polynomial is

Step-by-step explanation:

Given: Polynomials are there having 4 and -2 as zeroes.

To find: How many polynomials are there?

Solution :

If the zeros of a polynomial are given then it forms only one polynomial.

The zeroes of the polynomial are 4 and -2

Let x is the variable so

Factors are (x-4)(x+2)

Now, we MULTIPLY the factors to get polynomial.

The required polynomial is which has zeros 4 and -2.

Discussion

8946.	Prove that : sin 54⁰+ cos 36⁰= √2 cos 9⁰
Answer» ANSWER: COS36 ∘ cos54 ∘ −sin36 ∘ sin54 ∘ =0 COS(90 ∘ −54 ∘ )cos(90 ∘ −36 ∘ )−sin36 ∘ sin54 ∘ =sin54 ∘ sin36 ∘ −sin36 ∘ sin54 ∘ =sin36 ∘ sin54 ∘ −sin36 ∘ sin54 ∘ =0

8946.

Prove that : sin 54⁰+ cos 36⁰= √2 cos 9⁰

Answer»

ANSWER:

COS36

∘

cos54

∘

−sin36

∘

sin54

∘

=0

COS(90

∘

−54

∘

)cos(90

∘

−36

∘

)−sin36

∘

sin54

∘

=sin54

∘

sin36

∘

−sin36

∘

sin54

∘

=sin36

∘

sin54

∘

−sin36

∘

sin54

∘

=0

Discussion

8947.	What three consecutive even integers have sum of-36
Answer» Answer: THREE CONSECUTIVE integers WHOSE SUM is 36 are 10,12 , and 14 .

8947.

What three consecutive even integers have sum of-36

Answer»

Answer:

THREE CONSECUTIVE integers WHOSE SUM is 36 are 10,12 , and 14 .

Discussion

8948.	Write the co-efficient of x2 of 2 -x2.
Answer» Answer: 1 is the COEFFICIENT of x^2 Hope it HELPS U...

8948.

Write the co-efficient of x2 of 2 -x2.

Answer»

Answer:

1 is the COEFFICIENT of x^2

Hope it HELPS U...

Discussion

8949.	Find the coefficient of x^n in the expansion1+2x-3x^2/e^n
Answer» Answer: 3 is the cofficient Step-by-step EXPLANATION: i HOPE

8949.

Find the coefficient of x^n in the expansion1+2x-3x^2/e^n

Answer»

Answer:

3 is the cofficient

Step-by-step EXPLANATION:

i HOPE

Discussion

8950.	Convey symmetric difference of two sets?
Answer» $\huge\pink{\mid{\underline {\overline{\tt ❥︎A᭄ɴsᴡᴇʀ࿐✪}}\mid}}$ The symmetric DIFFERENCE of TWO SETS A and B is the set (A – B) ∪ (B – A) and is denoted by A △ B. ... A △ B is the set of all those ELEMENTS which belongs either to A or to B but not to both. A △ B is also expressed by (A ∪ B) - (B ∩ A). $\boxed{\fcolorbox{Blue}{Red}{\color{yellow}{hope\:it\:helps\: you}}}$ $\large\boxed{\fcolorbox{green}{blue}{\color{yellow}{MARK\:ME\:AS\: BRAINLIEST}}}$

8950.

Convey symmetric difference of two sets?

Answer»

$\huge\pink{\mid{\underline {\overline{\tt ❥︎A᭄ɴsᴡᴇʀ࿐✪}}\mid}}$

The symmetric DIFFERENCE of TWO SETS A and B is the set (A – B) ∪ (B – A) and is denoted by A △ B. ... A △ B is the set of all those ELEMENTS which belongs either to A or to B but not to both. A △ B is also expressed by (A ∪ B) - (B ∩ A).

$\boxed{\fcolorbox{Blue}{Red}{\color{yellow}{hope\:it\:helps\: you}}}$

$\large\boxed{\fcolorbox{green}{blue}{\color{yellow}{MARK\:ME\:AS\: BRAINLIEST}}}$

Discussion

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. If A={2,3,{4}} , then number of elements in P(A) is equal to: *

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Solvethefollowing differentd²y/dx-3 dy/dx + 2y= e³x

Simplify each of the following?please answer me this is urgent question please.

Out of 36m1. To stich a pant Im 15cm cloth is neededcloth, how many parts can bestiched and how much cloth will remain ?

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5. If the given data is not equally spaced f interpolutionis near the end of data theninterpolationformula is used.a) Newton's backward differenceb) Neauton's forward differencec) Langrange'sd) None of these

3. If A={2,3,{4}} , then number of elements in P(A) is equal to: *398164please answer my question with full explanation please

If 1 / x = u then 170u = 37 / 10 then find the value of ( 1 / x ) x

If the lines represented by ax + 2hxy+by² = 0 represents a pair of perpendicular lines ip. A) h=0 B) a+b=0

4. Median of the data 23,16,12,14,19,12,14,13,14 is____

Rationalize:3√2 -2√3 ---------------- 3√2 + 2√3 simple form:rationalize :3√2 -2√3 / 3√2 + 2√3

The additive inserve of 3 is:

9. If equal ares are subtracted from equals the reminders are equal . T/F

Write two factors on which resistance depends.

If a number is divisible by 2 , then which of the following cannot be it's unit digit ?

Customer deposited $ 1250 in his savings bank account. Find the Compound Interest (C.I.) earned by him after 3 years at the rate of 5% per annum.

Sin50°(√3-1)=1, how to prove both side?

1² +2²+3² ++ (n − 1)² =

If log √2 [log2{log4(x-15)}] = 0 then x=

3) Solve the following quadratic equation and give your answer correct to two significant figures: x+1/2x+5=x+3/3x+4

The silkworm spins cocoon in the pattern of _____. a)1 )6 c)0 d)8

. Two men A and B complete the work together in 7/24 days. The men A can take 2 day less to complete the work separately then man B. find the time in which each man can separately complete the work.

Solution set of the inequality 20x≤90 when x∈N, where N is a set of natural numbers, is{…,1,2,3,4}{…,1,2,3,4,4.5}{1,2,3,4,4.5}{1,2,3,4}

Add -2 by 5 and 3 by 4

3 [x3] < 5 [x - 5] text me

A candidate attempted 12 questions and secured full marks in all of them. If he obtained 60% in the test and all questions carried equal marks, then what is the number of questions in the test? 36 30 25 20

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Simplify each of the following?

Factorise: (x-3y)² -8 (x-3y)-20

Find the cardinal number of A2 = { x:x € N and 3《x 《7}

16 2. Express the following in exponential form. 20×20×20/19×19×19

How many polynomials are there exactly 4 & -2 as zeros

Prove that : sin 54⁰+ cos 36⁰= √2 cos 9⁰

What three consecutive even integers have sum of-36

Write the co-efficient of x2 of 2 -x2.

Find the coefficient of x^n in the expansion1+2x-3x^2/e^n

Convey symmetric difference of two sets?