作业帮若单项式M,N满足等式3x(M-5x)=6x2y3+N,则M-N为_____最好有过程!
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若单项式M,N满足等式3x(M-5x)=6x2y3+N,则M-N为_____最好有过程!
若单项式M,N满足等式3x(M-5x)=6x2y3+N,则M-N为_____
最好有过程!
若单项式M,N满足等式3x(M-5x)=6x2y3+N,则M-N为_____最好有过程!
3x(M-5x)=6x2y3+N
3xM-5x^2=6x^2y^3+N
对应项相等
3xM=6x^2y^3
-5x^2=N
M=2xy^3
N=-5x^2
M-N=2xy^3+5x^2
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