Question 2 (i) - Algebra Identities - Identity IV - Chapter 8 Class 8 Algebraic Expressions and Identities

Last updated at August 13, 2026 by

Ex 9.5, 2 - Use the identity (x + a) (x + b) = x^2 + (a + b) x + ab to

ย 

ย 

Remove Ads
Teachoo ยท Class 8 Explore Class 8

Transcript

Question 2 Use the identity (๐‘ฅ+๐‘Ž)(๐‘ฅ+๐‘)=๐‘ฅ^2+(๐‘Ž+๐‘)๐‘ฅ+๐‘Ž๐‘ to find the following products. (i) (๐‘ฅ+3) (๐‘ฅ+7) (๐‘ฅ+3) (๐‘ฅ+7) (๐‘ฅ+๐‘Ž)(๐‘ฅ+๐‘)=๐‘ฅ^2+(๐‘Ž+๐‘)๐‘ฅ+๐‘Ž๐‘ Putting ๐‘Ž = 3 & ๐‘ = 7 = ๐‘ฅ^2+(3+7)๐‘ฅ+(3ร—7) = ๐’™^๐Ÿ+๐Ÿ๐ŸŽ๐’™+๐Ÿ๐Ÿ

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.