Which expression is equivelent please help

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asked Aug 11, 2019 184k views

3 votes

Which expression is equivelent please help

Mathematics
middle-school

HJo asked

by HJo

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Which expression is equivelent please help

Answer: Hi!

$-2m(m+n-4)+5(-2m+2n)+n(m+4n-5)=\\\\-2m^2-2mn+8m+(-10m+10n)+nm+4n^2-5n=\\\\-2m^2-2mn+nm+8m-10m+10n-5n+4n^2=\\\\\boxed{-2m^2-mn-2m+5n+4n^2} \\\\\boxed{\boxed{-2m^2+4n^2-mn-2m+5n}\quad\to\quad C)}$

Dmarietta answered Aug 16, 2019

by Dmarietta

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