计算题：(-3x^2y^3+6x^2y^2-1/3xy)÷(-1/3xy)
人气：210 ℃ 时间：2020-02-02 21:34:02
解答
原式=-3x^2y^3÷(-1/3xy)+6x^2y^2÷(-1/3xy)-1/3xy÷(-1/3xy)
=9xy^2-18xy+1
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