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2x^3y+4x^2y+2xy
2x^3 y+4x^2 y+2xy
人气:110 ℃ 时间:2020-01-29 07:07:37
解答
2x^3 y+4x^2 y+2xy =2xy(x+2x)+2xy =2xy(x+2x+1) =2xy(x+1)
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