Ex 12.2, 4 (i) - Chapter 12 Class 8 Factorisation

Last updated at August 13, 2026 by

Ex 12.2, 4 (i) - Factorise a^4 - b^4 - Chapter 14 Class 8 NCERT - Ex 12.2

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Ex 12.2, 4 Factorise. (i) 𝑎^4 – 𝑏^4𝑎^4 – 𝑏^4 = (𝑎^2 )^2 − (𝑏^2 )^2 Using 𝒙^𝟐 − 𝒚^𝟐 = (x + y) (x − y) Here 𝑥=𝑎^2 and y = 𝑏^2 = (𝑎^2+𝑏^2 ) (𝑎^2 − b^2) Using 𝒙^𝟐 − 𝒚^𝟐 = (x + y) (x − y) Here 𝑥=𝑎 and y = 𝑏 = (𝑎^2+𝑏^2 ) (𝑎+𝑏) (𝑎 − b) = (𝒂 − 𝒃) (𝒂+𝒃) (𝒂^𝟐− 𝒃^𝟐)

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