Evaluate: (6m-7m)^2 + (6m+7m)^2
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Answer:
=(6m-7m)² + (6m+7m)²
= (36m² + 49m² - 2*6m*7m) + (36m² + 49m² + 2*6m*7m)
= 36m² + 49m² - 84m² + 36m² + 49m² + 84 m²
= 170m²
Therefore,
(6m-7m)² + (6m+7m)² = 170m²
Hope it helps!
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