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5x 7y 2
Question
(-5x+7y)^2
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Answer to a math question (-5x+7y)^2
Darrell
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77
Answers
Apply Perfect Square Formula
$\left(a+b\right)^2=a^2+2ab+b^2$
$=(-5x)^{2}+2(-5x)\cdot 7y+(7y)^{2}$
Simplify
$(-5x)^{2}+2(-5x)\cdot 7y+(7y)^{2}:{\quad}25x^{2}-70xy+49y^{2}$
$=25x^{2}-70xy+49y^{2}$
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