(x-y)^m+2除以(x-y)^m-2等于多少?

(x-y)^m+2除以(x-y)^m-2等于多少? （x+y）的2m+1次方除以四分之一(X+ Y)的m+1次方 x等于m加1除以4,y等于m减1除以2怎样得到x和y x^n*y*(-x^2y^m) 计算：1.[(m+n)(n-m)-(m+n)^2+3m(m+n)]除以（-2M),其中m=-4,n=2 2.(x+y)(-x+y)-(x-y)^2-(X^2y-xy^2)除 计算：(y-x)^3(x-y)^m-(x-y)^m+2(y-x) (Y-X)^3*(X-Y)^m+(X-Y) ^m+1*(Y-X)^2 因式分解：(x+y)^2-2m(x+y)+m^2 m(2x+y)²-m(x+2y)² (x+y)(m+n)2-(x+y)(m+n)2 4m(x-y)-2m^2(y-x)^3 因式分解m²+2m(x+y)+(x+y)² 已知函数f(x)=x-5除以2x+m的图像关于y=x求实数m (x-y)m次方(y-x)2m次方+(y-x)3m次方得几 计算(x-y)^m(y-x)^2m+(y-x)^3m 已知(3x^2y^m)^2除以(2x^my)^3=(3x^2y^n)^2除以(2x^n-1y^n)^3 (1)(m+n)^3+2m(m+n)^2+m^2(m+n)= (2)[（x-2y)(x+2y)+4(1)(m+n)^3+2m(m+n)^2+m^2(m+n)=(2)[（x-2y)(x+2y)+4(x-y)^2］除以5x=(3)1.2345^2+(0.7655)^2+2.469乘0.7655-2.5^2= 设全集U=｛（x,y)|x,y属于R｝,集合M={(x,y)|(y-3)除以(x-2)=1},N={(x,y)|y不等于x+1},那么M并N的补集是多少