Ex 2.4, 4 (vi) - Chapter 2 Class 9 Polynomials

Last updated at August 14, 2026 by

Ex 2.4, 4 (vi) - Expand (1/4 a - 1/2b + 1)^2 using suitable identities - Ex 2.4

Remove Ads
Teachoo · Class 9 Explore Class 9

Transcript

Ex 2.4, 4 Expand each of the following, using suitable identities: (vi) (1/4 a 1/2 b+1)^2 (1/4 a 1/2 b+1)^2 = ((1/4 a)+( 1/2 b)+1)^2 Using (x + y + z)2 = x2 + y2 + z2 + 2xy + 2yz + 2zx Where x = 1/4 a , y= -1/2 b ,z = 1 = (1/4 a)^2+ ( 1/2 b)^2 + (1)2 + 2 (1/4 a) ( 1/2 b) + 2 ( 1/2 b)(1) + 2 (1/4 a) (1) = 1/16 a2 + 1/4 b2 + 1 - 1/4 ab b + 1/2 a

Davneet Singh's photo - Co-founder, Teachoo

Made by

Davneet Singh

Davneet Singh is an IIT Kanpur graduate and has been teaching for 16+ years. At Teachoo, he breaks down Maths, Science and Computer Science into simple steps so students understand concepts deeply and score with confidence.

Many students prefer Teachoo Black for a smooth, ad-free learning experience.