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m^2x^2+2m^2xy+m^2y^2
人气:397 ℃ 时间:2020-09-22 01:56:50
解答
m^2x^2+2m^2xy+m^2y^2
=m^2(x^2+2xy+y^2)
=m^2(x+y)^2
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