Mathematics Class 9>Chapter 4 - Algebraic Identities>EXERCISE>Q 1

EASY

9th CBSE

IMPORTANT

Earn 100

Find the cube of the following binomial expression

$2 x + \frac{3}{x}$

Important Questions on Algebraic Identities

EASY

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 4 - Algebraic Identities>EXERCISE>Q 1

Find the cube of the following binomial expression

$4 - \frac{1}{3 x}$

MEDIUM

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 4 - Algebraic Identities>EXERCISE>Q 2

If

a + b = 10

and

a b = 21

, find the value of

a^{3} + b^{3}

.

EASY

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 4 - Algebraic Identities>EXERCISE>Q 3

If

a - b = 4

and

a b = 21

, find the value of

a^{3} - b^{3}

MEDIUM

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 4 - Algebraic Identities>EXERCISE>Q 4

If

x + \frac{1}{x} = 5

, find the value of

x^{3} + \frac{1}{x^{3}}

MEDIUM

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 4 - Algebraic Identities>EXERCISE>Q 5

If

x - \frac{1}{x} = 7

, find the value of

x^{3} - \frac{1}{x^{3}}

MEDIUM

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 4 - Algebraic Identities>EXERCISE>Q 6

If

x - \frac{1}{x} = 5

, find the value of

x^{3} - \frac{1}{x^{3}}

HARD

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 4 - Algebraic Identities>EXERCISE>Q 7

If

x^{2} + \frac{1}{x^{2}} = 51

, find the value of

x^{3} - \frac{1}{x^{3}}

for positive value of

(x - \frac{1}{x})

MEDIUM

9th CBSE

IMPORTANT

Mathematics Class 9>Chapter 4 - Algebraic Identities>EXERCISE>Q 8

If

x^{2} + \frac{1}{x^{2}} = 98

, find the value of

x^{3} + \frac{1}{x^{3}}

for the positive value of

(x + \frac{1}{x})

.