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计算(0.16x^4y^3-1/5x^5y^4-3/10x^5y^2)/(-0.4x^3y^2
人气:168 ℃ 时间:2019-10-10 06:28:57
解答
(0.16x^4y^3-1/5x^5y^4-3/10x^5y^2)/(-0.4x^3y^2)
=-0.4xy+0.5x^2y^2+0.75x^2
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