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把m(2x+y)^2-m(x+2y)^2分解因式
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人气:428 ℃ 时间:2020-05-21 13:16:32
解答
m(2x+y)^2-m(x+2y)^2
=m[(2x+y)^2-(x+2y)^2]
=m[2x+y-(x+2y)][2x+y+x+2y]
=m(x-y)(3x+3y)
=3m(x-y)(x+y)
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