若x^3m=4,y^3n=5,求（x^2m)^3+(y^n)^3—x^2m·y^n·x^4m·y^2n的值

若x^3m=4,y^3n=5,求（x^2m)^3+(y^3n)^2 若x^3m=4,y^3n=5,求(x^2m)^3+(y^n)^3-x^2n*y^n*x^4m*y^2n的值 若x^3m=4,y^3n=5,求(x^2m)^3+(y^n)^3-x^2n*y^n*x^4m*y^2n的值 若x^3m=4,y^3n=5,求（x^2m)^3+(y^n)^3—x^2m·y^n·x^4m·y^2n的值 若x^3m=4,y^3n=5,求(x^2m)^3+(y^n)^3-^2m*y^n的值 若[-3(x+y)^m*(x-y)^2n]^2*[-(x+y)^2]=-a(x+y)^10*(x-y)^12-n,求m,n的值 若x^3m=4 y^3m=5 求(x^2m)^3+(y^n)^3-x^3my^3n的值 若-2x^2*y(-x^m*y+3xy^3)=2x^5y^2-6x^3y^n,求m,n的值? 已知单项式M,N满足3x(M-5x)=6x^2y^3+N,求M,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 若单项式M,N满足2x（M+3x）=6*x*x*y*y+N,求M,N 已知(m+n)x^n·y^m-2·(3xy^2+5x^2·y)=21x^m·y^n+1+35x^m+1·y^n,求m和n SOS.4道简单数学题.1 若4x^3m-1与-3x^5 y^2n+1是同类项,求m+n2 多项式-x^m+(n-)x+1为关于x的二次二项式,则m=_____ n=_____3 已知m、n为正整数,单项式（n-2m）x^n+1y^m+1为5次单项式,1 求m n的值 2 当x=-1 y=1时,求次 若a(x^3m)y^12/(3(x^2)y^2n)=4x^6y^8求2m+n-a 已知x^m+n=3,y^m-n=2,求代数式(-1/3x^2m+n·y^5m-6n)·(1/2x^m+2n·y^2n-m) 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 2m+n 5 3 2m-n诺4x y 与x y 是同类项,m/n=