已知3x^(m-n-1)+2y^(m+2n-4)=2是二元一次方程,则m=?,n=?

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) 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 已知-2x^m-1y^3和1/2x^ny^m+n是同类项,则(n-m)^2012 已知x=2m-3n根号m+n+3是m+n+3的算术平方根,y=m-n+1根号m+2n是m+2n的立方根,求（x-y）的2006次方 已知 8x^2y^3 与 -3x^m+1y^n+1 是同类项,则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3x(M-5x)=6x^2y^3+N,求M,N 已知,单项式M,N满足2x（M+3x)=6x²y²+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) 北师大版初一下数学代数题已知[x^(m-1)]-n[x^(m-2)]y+2[x^(m-3)}y-3[x^(m-3)](y^2)+2[x^(m-1)]y+4[x^(m-2)]y其中x是未知数 n,m,y 是常数Sorry 问题给的不明确应该是这样的：已知[x^(m-1)]-n[x^(m-2)]y+2[x^(m-3)}y-3[x^(m-3)](y 已知2^=x,2^n=y,m,n都是正整数,m>=n,求2^m-n+1 已知多项式4x^n y^m z+2x^n-1 y^m+2 z^2+6x^n-2 y^m+1 z各项的公因式是2x^3y^4z,求m,n 已知多项式4x^n y^m z+2x^n-1 y^m+2 z^2+6x^n-2 y^m+1 z各项的公因式是2x^3y^4z,求m,n 已知单项式M、N满足（6x^2y^3-M）/n=-2x+3,求M、N 已知|m-2|+(3-3n)^2=0,化简2x^(m-n+1)y^3-6y^(m+n)x^2 已知1/2x^3m-1*y^3与-3/5x^5*y^2n-1是同类项求m^n+n^m的值 已知|m-2|+(3-3n)²=0,化简2x^m-n+1 y^3-6y^m+n x² 已知-5x^2m-1 y^n与11X^n+2 y^-4-3m的积是同类项,求2n-m-9