已知单项式m.n满足3x（m-5x）=6x的二次幂y的二次幂＋n,则mn等于

已知单项式M,N,满足3x（M-5x）=6xy,+N,则M= ,N= 已知单项式M,N满足3x(M-5x)=6x^2y^3+N,求M,N 已知单项式M N满足3x(M-5x)=6x^2y^2 求M N 已知单项式M,N满足等式3x(M-5x)=6xy+N,则M= ,N= 已知单项式M、N满足（6x^2y^3-M）/n=-2x+3,求M、N 已知单项式M、N满足等式3x[M-5x]=6xxyyy+N,求M、N 已知单项式M、N满足等式3x（M-5x）=6x²y³+N,求M、N 已知单项式M N满足等式3x（m－5x）=6x²y²+N求M N 已知单项式M,N满足等式3x(M-5x)=6x平方y3次方+n,求MN 已知单项式M,N满足等式3x(M-5x)=6x平方y3次方+n,求MN 已知单项式M、N满足2x(M+3x)=6x^2y^2+N,求M、N. 已知,单项式M,N满足2x（M+3x)=6x²y²+N,求M,N 已知单项式M、n满足等式3x（m-5x）=6X^2Y^3 N,则m= 已知单项式M、N满足3x(M+6x^2)=18xy+N,求M和N? 已知单项式M、N满足3x（M+6x²)=18xy+N,求M和N 已知单项式M,N满足3x(M-5x）=6x²y+N,则M= N=已知单项式M,N满足3x(M-5x）=6x²y+N,则M= N= 已知单项式M、N满足3x（M-5x）=6x²y²+N,则MN=（）一步一步说 已知单项式m.n满足3x（m-5x）=6x的二次幂y的二次幂＋n,则mn等于