Math, asked by hanumansingh95790, 9 months ago

simplify :. algebraic expressions

using identity :

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Answered by manickasamy77

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Answered by Anonymous

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(7m - 8n)² - (7m + 8n)²

Identity :- a²-b² = (a-b)(a+b)

(7m - 8n)² - (7m + 8n)² = (7m-8n-7m-8n) (7m-8n+7m+8n) = -16n × 14m = -224mn

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