M=2xy^3,N=-15x^2
左边展开为两个单项式相加
3x*M-15x^2=6x^2y^3+N
一一对应
可得3x*M=6x^2y^3
-15x^2=N
已知单项式M,N满足等式3x(M-5x)=6x^2y^3+N.求M,N.
2个回答
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