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OpenStudy (anonymous):
simplify this expression (5m-4)^2
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OpenStudy (anonymous):
\[25m ^{2}-2\times(-4)\times5m +16\]
OpenStudy (anonymous):
where did the -2 times -4 come from
OpenStudy (anonymous):
\[(a-b)^{2}=a ^{2}-2ab+b ^{2}\]
OpenStudy (anonymous):
got it ?
OpenStudy (anonymous):
no
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OpenStudy (anonymous):
never mind i get it
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