因式分解2m^2+4mn+2n^2-8= _____

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因式分解2m^2+4mn+2n^2-8= _____
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因式分解2m^2+4mn+2n^2-8= _____
因式分解2m^2+4mn+2n^2-8= _____

因式分解2m^2+4mn+2n^2-8= _____
2m^2+4mn+2n^2-8
=2(m+n)^2-8
=2(m+n+2)(m+n-2)

2(m-n-2)(m-n+2)

2m^2+4mn+2n^2-8
=2(m+n)^2-8
=2(m+n+2)(m+n-2)