(x-2y-z)²
PLS SOLVE AND EXPLAIN IMPORTANT >-<
Chapter:Expansion
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Answer:
(a-b-c) ² = a² + b² + c² - 2ab + 2bc - 2ac
\bf \: SolutionSolution
(x-2y-z) ²
= x ² + (2y)² + z² - 2×x×2y + 2×2y×z - 2×x×z
= x² + 4y² + z² - 4xy + 4yz - 2xz
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