Mathematics: Which is equivalent to the following expression (3m^2+2mn-n^2)+(m^2+4mn-n^2)

Which is equivalent to the following expression

Ответ:

dxnimxriee

10.03.2022

4m² + 6mn - 2n²

Step-by-step explanation:

$(3m^2+2mn-n^2)+(m^2+4mn-n^2)\\\\=3m^2+2mn-n^2+m^2+4mn-n^2\qquad\text{combine like terms}\\\\=(3m^2+m^2)+(2mn+4mn)+(-n^2-n^2)\\\\=\boxed{4m^2+6mn-2n^2}$

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Ответ:

emmafrye1

20.12.2020

Mathematics

i don't understand your question

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Which is equivalent to the following expression (3m^2+2mn-n^2)+(m^2+4mn-n^2)

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