angelinaortega51 angelinaortega51

29-11-2017
Mathematics

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which of the following is an equivalent expression? -2m(m+n-4)+5(-2m+2n)+n(m+4n-5)

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ANCKPOP ANCKPOP

03-08-2019

Answer:

[tex]-2m^2-mn-2m+5n+4n^2[/tex]

Step-by-step explanation:

[tex]-2m(m+n-4)+5(-2m+2n)+n(m+4n-5)\\=-2m^2-2mn+8m-10m+10n+mn+4n^2-5n\\=-2m^2-2mn+mn+8m-10m+10n-5n+4n^2\\=-2m^2-mn-2m+5n+4n^2\\[/tex]

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