NCERT Solutions for Class 9 Maths Chapter 2

Important NCERT Questions

Polynomials

NCERT Books for Session 2022-2023

CBSE Board and UP Board Others state Board

EXERCISE 2.5

Page No:48

Questions No:1 part:5

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

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(v) (3 – 2x)(3 + 2x)

= (3)² – (2x)² [∵ (a + b)(a – b) = a² – b²]

= 9 – 4x²