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

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Ex 12.2, 4 (v) - Factorise a^4 - 2a^2b^2 + b^4 - Ex 12.2 - Ex 12.2

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Ex 12.2, 4 Factorise. (v) š‘Ž^4 ā€“ 2š‘Ž^2 š‘^2 + š‘^4š‘Ž^4 ā€“ 2š‘Ž^2 š‘^2 + š‘^4 = (š‘Ž^2 )^2 āˆ’ 2š‘Ž^2 š‘^2+(š‘^2 )^2 = (š‘Ž^2 )^2 +(š‘^2 )^2āˆ’2 (š‘Ž^2Ɨš‘^2 ) Using (š’™ āˆ’ š’š)^šŸ=š‘„^2+š‘¦^2 āˆ’ 2xy Here š‘„=š‘Ž^2 and y = š‘^2 = (š‘Ž^2 āˆ’ b^2 )^2 Using š’™^šŸ āˆ’ š’š^šŸ=(š‘„+š‘¦)(š‘„ āˆ’ y) Here š‘„=š‘Ž and y = š‘ = [(š‘Ž+š‘) (š‘Ž āˆ’ b)]^2 = (š’‚+š’ƒ)^šŸ (š’‚ āˆ’ š’ƒ)^šŸ

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