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Use suitable identities to find the following products :- (3 – 2x) (3 + 2x) - Mathematics

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Use suitable identities to find the following products :- (3 – 2x) (3 + 2x)

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Solution

By using the identity (x + y)(x - y) = x2 - y2,

(3 – 2x) (3 + 2x) = (3)2 - (2x)2

                          = 9 - 4x2

Concept: Algebraic Identities
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APPEARS IN

NCERT Class 9 Maths
Chapter 2 Polynomials
Exercise 2.5 | Q 1.5 | Page 48

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