Ex 8.4, 3 (viii) - Chapter 8 Class 8 Algebraic Expressions and Identities

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Ex 8.4, 3 (viii) - Simplify (a + b + c)(a + b - c) - Chapter 9 Class 8 - Ex 8.4

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Ex 8.4, 3 Simplify. (viii) (š‘Ž+š‘+š‘)(š‘Ž+š‘āˆ’š‘) (š‘Ž+š‘+š‘)(š‘Ž+š‘āˆ’š‘) = š‘Ž(š‘Ž+š‘āˆ’š‘)+š‘(š‘Ž+š‘āˆ’š‘)+š‘(š‘Ž+š‘āˆ’š‘) = (š’‚ Ɨ š’‚)+(š’‚ Ɨ š’ƒ)āˆ’(š’‚ Ɨ š’„)+(š’ƒ Ɨ š’‚)+(š’ƒ Ɨ š’ƒ)āˆ’(š’ƒ Ɨ š’„) + (š’„ Ɨ š’‚)+(š’„ Ɨ š’ƒ)āˆ’(š’„ Ɨ š’„) = š‘Ž^2+š‘Žš‘āˆ’š‘Žš‘+š‘š‘Ž+š‘^2āˆ’š‘š‘+š‘š‘Ž+š‘š‘āˆ’š‘^2 = š‘Ž^2+š‘Žš‘āˆ’š‘Žš‘+š‘Žš‘+š‘^2āˆ’š‘š‘+š‘Žš‘+š‘š‘āˆ’š‘^2 = š‘Ž^2+š‘^2āˆ’š‘^2+š‘Žš‘+š‘Žš‘āˆ’š‘š‘+š‘š‘āˆ’š‘Žš‘+š‘Žš‘ = š’‚^šŸ+š’ƒ^šŸāˆ’š’„^šŸ+šŸš’‚š’ƒ

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