已知:单项式M、N满足等式2x(M-x)=6x²y³+Nx²,求M,N.
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已知:单项式M、N满足等式2x(M-x)=6x²y³+Nx²,求M,N.已知:单项式M、N满足等式2x(M-x)=6x²y³+Nx²,求M,
已知:单项式M、N满足等式2x(M-x)=6x²y³+Nx²,求M,N.
已知:单项式M、N满足等式2x(M-x)=6x²y³+Nx²,求M,N.
已知:单项式M、N满足等式2x(M-x)=6x²y³+Nx²,求M,N.
2x(M-x)=2x*M-2*x^2=6x的平方y的三次方+Nx^2
所以
2x*M=6x^2*y^3,-2*x^2=Nx^2
M=3xy^3,N=-2
M+N=3xy^3-2
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