Math, asked by kuppasridevi, 2 months ago

Find (9m-2n)²
tell me fast

Answers

Answered by CrimsonQueen

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Answered by karthikeya789

Step-by-step explanation:

as we know (a-b)²= a²+b²-2ab

9m²+(-2n)²-2(9m)(-2n)

81m+4n-18m×4n

63m+16n

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