晕,题目的式子打开 3xM + (-15x^2) = 6x^2y^3 + N
所以 M=6x^2y^3/(3x)=2xy^3
N=-15x^2
已知单项式M,N满足等式3x(M-5x)=6x平方y3次方+n,则M= ,N=
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