2x^2m-n y^3m-2n 与5x^2n y^5是同类项,则m= ,n=

2m+n 5 3 2m-n诺4x y 与x y 是同类项,m/n= 已知-7x^m-2n y^4与9分之8x^5 y^m+n 是同类项,求（m-2n)^2 -3(m+n)-5(m-2n)^2 +m+n的值 若3x^m+1y^2与x^3y^n的积是单项式3x^5y^5则n^m+m^n= 2x^2m-n y^3m-2n 与5x^2n y^5是同类项,则m= ,n= 若2x^m-n+1y^3m-2n-5与-3x^n-1y是同类项,则m=___,n=____RT (x+y)(m+n)2-(x+y)(m+n)2 m(x-y)^n+n(y-x)^2n因式分解 若3x^(m+5)y^2与x^3y^n是单项式,则m^n=_____ 为什么x^ m+5与x^ 3相等 若3x^(m+5)y^2与x^2y^n的和是单项式,则n^m= 若3x^(m+5)y^2与x^3y^n是单项式,则m^n=_____ 3x^m+5y^2与x^3y^n的和是单项式,则n^m= 3x^m+5y^2与x^3y^n的和是单项式,求m,n各是几? 3x^(m-5)y^2与x^3y^n的和是单项式.则m^n=? (2x-3)(x-n)=2x^2+5x+m求m与n 已知单项式M,N满足3x(M-5x)=6x^2y^3+N,求M,N 已知-3x^m-2ny^n-2与5分之1x^5y^4-m是同类项,求(m-2n)的平方-5(m+n) x^n*y*(-x^2y^m) 已知-5x^m+2n×y^3m-n÷(-2x^3n×y^2m+n)的商与-2x^3y^2是同类项,求m+n的值