Expand the following using indenties.
(3m-7/11n)^2.
please give me answer.
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(a-b)^2 = a^2 + b^2 -2ab
(3m-7/11n)^2=(3m)^2+(7/11n)^2-2×3m×7/11
(3m -7/11n)^2 = 9m^2+49/121n^2-42m/11
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this is your answer .
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