Question 1 (iii) - Algebra Identities and Formulas - Chapter 8 Class 8 Algebraic Expressions and Identities

Last updated at August 14, 2026 by

Ex 9.5, 1 - Chapter 9 Class 8 Algebraic Expressions and Identities - Part 3

Remove Ads

Transcript

Question 1 Use a suitable identity to get each of the following products. (iii) (2𝑎 – 7) (2𝑎 – 7) (2𝑎−7) (2𝑎−7) = (2𝑎−7)^2 = (2𝑎)^2+(7)^2−2(2𝑎) (7) = (2^2×𝑎^2 )+49−(2×2×7)×𝑎 = 𝟒𝒂^𝟐+𝟒𝟗−𝟐𝟖𝒂

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.