(-1/2xy^2)-1/6x(xy^3)^2=?
人气：315 ℃ 时间：2020-06-22 20:42:20
解答
(-1/2xy^2)-1/6x(xy^3)^2=-1/2xy^2-1/6x^2y^6=-1/2xy^2(1+1/3xy^4)
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