Write the following expression as perfect square and evaluate where m = (-2) and n =1. 36m² -96mn + 64n²
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Step-by-step explanation:
36m² -96mn + 64n²
= 36(-2)² -96(-2)(1) + 64(1)²
= 36(4) + 192 + 64
= 144 + 192 + 64
= 400
= √20
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