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-3x2+2x2y+xy2
人气:384 ℃ 时间:2020-02-04 00:47:45
解答
-3x2+2x2y+xy2
=-3x²+3x²y-x²y+xy²
=3x²(y-1)+xy(y-1)
=(3x²+xy)(y-1)
=x(3x+y)(y-1)
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