Ex 8.3, 5 (b) - Chapter 8 Class 8 Algebraic Expressions and Identities

Last updated at August 14, 2026 by

Ex 8.3, 5 (b) - Add: 2x (z – x – y) and 2y (z – y – x) - Teachoo Maths - Ex 8.3

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Ex 8.3, 5 (b) Add: 2x (z – x – y) and 2y (z – y – x)2x (z – x – y) = 2𝑥 × z – 2𝑥 × 𝑥 – 2𝑥 × 𝑦 = 2𝒙z – 2𝒙^𝟐 – 2𝒙𝒚 2y (z – y – x) = 2𝑦 × z – 2𝑦 × 𝑦 – 2𝑦 × 𝑥 = 2𝒚z – 2𝒚^𝟐 – 2𝒙𝒚 Simplifying expressions Adding expressions So, our answer is −2x2 − 2y2 − 4xy + 2yz + 2zx

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