计算(6m^2n^2-3m^2)/(-3m^2);
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计算(6m^2n^2-3m^2)/(-3m^2);计算(6m^2n^2-3m^2)/(-3m^2);计算(6m^2n^2-3m^2)/(-3m^2);(6m^2n^2-3m^2)/(-3m^2)=3m
计算(6m^2n^2-3m^2)/(-3m^2);
计算(6m^2n^2-3m^2)/(-3m^2);
计算(6m^2n^2-3m^2)/(-3m^2);
(6m^2n^2-3m^2)/(-3m^2)=3m^2(2n^2-1)/(-3m^2)=(2n^2-1)/-1=1-2n^2
其实就是把分母跟分子里面的公因式3m^2提取出去,约分就OK了
(6m^2n^2-3m^2)/(-3m^2)=-2n2+1
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