1.
=-2xa^2b^2*3/2xa^3b^3
=-3x^2a^5b^5
2.
求哥哥姐姐叔叔阿姨帮帮忙,(1)-2x(ab)^2*3/2x(ab)^3 (2)2x^m-1/2x^(m-2)y^n-2
4个回答
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