Find the value of the following algebraicexpressions, if m=1,n=-2, p=3

1.	Find the value of the following algebraicexpressions, if m=1,n=-2, p=3,x=2m and y=3n:(i) mi+mnp-11 (ii) x+5y-6mº +2mn+n(iv)xyx² - y²(iii) mnp
Answer» Answer: 1. m=1 i=? n=-2 p=3 1×i+1×-2×3 i+(-6) i=6 2. x+5y-6 2m+5×3n-6 2×1+5×3×-2-6 -34 3. m+2mn+n 1+2×1×-2+(-2) 1-4-2 -5 4.xy 2m×3n 2×1×3×-2 -12 5.x^2-y^2 2m×2m-3n×3n 2×1×2×1-3×-2×3×-2 -32 6.mnp 1×-2×3 -6

Find the value of the following algebraicexpressions, if m=1,n=-2, p=3,x=2m and y=3n:(i) mi+mnp-11 (ii) x+5y-6mº +2mn+n(iv)xyx² - y²(iii) mnp

Answer»

Answer:

1. m=1

i=?

n=-2

p=3

1×i+1×-2×3

i+(-6)

i=6

2. x+5y-6

2m+5×3n-6

2×1+5×3×-2-6

-34

3. m+2mn+n

1+2×1×-2+(-2)

1-4-2

-5

4.xy

2m×3n

2×1×3×-2

5.x^2-y^2

2m×2m-3n×3n

2×1×2×1-3×-2×3×-2

-32

6.mnp

1×-2×3

-6