Math, asked by Anonymous, 3 months ago

Find the area of a square with side ( 21 + mn ) units ??

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Answered by Anonymous

$(21 + mn) \times (21 + mn) \\ = 21(21 + mn) + mn(21 + mn) \\ = 441 + 21mn + 21mn + mn2 \\ = 441 + 42mn + mn2 \\ so \: it \: is \: the \: area \: of \: square$

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Find the area of a square with side ( 21 + mn ) units ??​

Answers

Find the area of a square with side ( 21 + mn ) units ??