Find (9m-2n)²
tell me fast
Answers
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TheDeadlyWasp:
Great efforts...Sanaya must be appreciated...♥️...
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8
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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