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-1/2x^3y+1/4x^2y^2-2/8x^3y^3
人气:258 ℃ 时间:2020-10-01 19:47:57
解答
-1/2x^3y+1/4x^2y^2-2/8x^3y^3
=-1/4 x^2y (2x-y+xy^2)
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