Question 3 (iii) - Algebra Identities and Formulas - Chapter 8 Class 8 Algebraic Expressions and Identities

Last updated at August 14, 2026 by

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

Remove Ads

Transcript

Question 3 Find the following squares by using the identities. (iii) (6𝑥^2−5𝑦)^2 (6𝑥^2−5𝑦)^2 (𝑎−𝑏)^2=𝑎^2+𝑏^2−2𝑎𝑏 Putting 𝑎 = 6𝑥^2 & 𝑏 = 5𝑦 = (6𝑥^2 )^2+(5𝑦)^2−2(6𝑥^2 )(5𝑦) = (6^2×𝑥^(2 × 2) )+(5^2×𝑦^2 )−(2×6×5)×(𝑥^2×𝑦) = (36×𝑥^4 )+(25×𝑦^2 )−(60×𝑥^2 𝑦) = 𝟑𝟔𝒙^𝟒+𝟐𝟓𝒚^𝟐−𝟔𝟎𝒙^𝟐 𝒚

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.