来自胡必武的问题
已知单项式M,N满足2x(M+3x)=6x^2y^2+N,求M,N.我已经算出来了M=3xy^2,N=6x^2.因为2xM+6x^2=6x^2y^2+N但是为什么2xM就一定等于6x^2y^2,而N也一定等于6x^2?
已知单项式M,N满足2x(M+3x)=6x^2y^2+N,求M,N.我已经算出来了M=3xy^2,N=6x^2.因为2xM+6x^2=6x^2y^2+N但是为什么2xM就一定等于6x^2y^2,而N也一定等于6x^2?
