1.

write the constant term in each of the following expression:- 1) 3x²+45-6x 2)17-a²b+4b². 3)4a²+2a²-19 with explaintion plz fast ​

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Page 1 of 277

Kimberley Girls’ High School

Mathematics

Grade 9

Chapter 1

The Number System

➔ Natural Numbers:

➔ Counting Numbers:

➔ Integers:

➔ Rational Numbers:

EXAMPLES:

➔ Irrational Numbers:

Examples:

➔ Real Numbers:

➔ Non-Real

Recurring Fraction → Common Fraction

Examples:

1.

Let:

2.

Let:Page 2 of 277

Inequalities on the Number Line

Notation

1.

Both the above notations mean: is any real number between and ; where is

included and excluded.

2. On the number line:

Included:

Excluded: 0

Infinity:

Examples:

1.

2.

3.

4.

5.

6.Page 3 of 277

7.

EXERCISE 1

1. Choose from the list:

1.1 Integers 1.2 Rational Numbers 1.3 Irrational Numbers

1.4 Non-real Numbers 1.5 Natural Numbers

2 Express each of the following as a DECIMAL fraction:

2.1 2.2

8

5

2.3 2.4

9

− 4

a. 2.6 2.7 2.8

2.9 2.10

3. Express each of the following as common fractions:

3.1 3.2 3.3 3.4

3.5 3.6 3.7 3.8

4. REPRESENT each of the following inequalities GRAPHICALLY (on a number line):

4.1 4.2

4.3 4.4

4.5 4.6

4.7 4.8

4.9 4.10

CHAPTER 2:

INDICES


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