{2m+9n=48 {3m-5n=-15 求x和y
已知单项式M,N满足3x(M-5x)=6x^2y^3+N,求M,N
已知M,N分别表示不同的单项式,且 3x(M-5x)=6x^2y^3+N,求M和N
已知M,N分别表示不同的单项式,且 3x(M-5x)=6X^2 y^3+N 求M和N
3x+4y=-5 5x+6y=-9 (n-8m)x-8y=10 5x+(10m+2n)y=-9 求m.m+n.n=?
已知单项式M N满足3x(M-5x)=6x^2y^2 求M N
若方城5x的2m+n次方+4y的3m+2n=9是关于想,y的二元一次方程,求n,m
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)=6x^2y^2+N,求M、N.
已知,单项式M,N满足2x(M+3x)=6x²y²+N,求M,N
设m和n均不为0,3x^2y^m+n和-5x^m y^3是同类项,求3m^3-m^2n+3mn^2+9n^3/5m^3+
集合M={X=3m+1,m∈N*},N={y/y=5n+2,n∈N*},则M∩N=?
若x^3m=4,y^3n=5,求(x^2m)^3+(y^3n)^2