Question 4 (i) - Algebra Identities - Identity III - Chapter 8 Class 8 Algebraic Expressions and Identities

Last updated at August 13, 2026 by

Ex 9.5, 4 - Simplify (i) (a^2 - b^2)^2 (ii) (2x + 5)^2 - (2x - 5)^2

 

 

 

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Question 4 Simplify. (i) (𝑎^2−𝑏^2 )^2 (𝑎^2−𝑏^2 )^2 (𝑥−𝑦)^2=𝑥^2+𝑦^2−2𝑥𝑦 Putting 𝑥 = 𝑎^2 & 𝑦 = 𝑏^2 = (𝑎^2 )^2+(𝑏^2 )^2−2(𝑎^2 )(𝑏^2 ) = 𝑎^(2 × 2)+𝑏^(2 × 2)−2𝑎^2 𝑏^2 = 𝒂^𝟒+𝒃^𝟒−𝟐𝒂^𝟐 𝒃^𝟐

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