若m=y/x-x/y,n=y/x+x/y,则m的平方-n的平方等于多少?

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 m(x-y)-n(y-x)因式分解 m(x-y)+n(y-x) x^n*y*(-x^2y^m) 设M={(x,y)||x|+|y| m(x+y)+n(x+y)-x-y因式分解 x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 已知x,y是实数,集合m{x,y已知x,y是实数,集合m={x,y/x,1},n={x^2,x+y,0}.若m=n,求x^2012+y^2012的值 已知M=(x,y)|y>=x2 N=(x,y)|x2+(y-a)2 假设集合U={(x,y)|x∈R,y∈R },A={(x,y)|2x-y+m>0},B={(x,y)|x+y-n 化简 x / y(x+y) - y / x(x+y) = 已知x+y=m,x³+y³=n,求x²+y² x+y=m,x-y=n,那么2x-3y等于 x+y=m,x-y=n,那么2x-3y等于多少 若不等式组x>m,x=2,y+n 已知M={(x,y)|y=-x^2+mx-1},N={(x,y)|y=-x+3,0 已知集合M={(x,y)|x^2+y^2=0},N={(x,y)||x|+|y| 集合N=｛（x,y)|（x-1）^2｝+(y-1)^20},M={(x,y)|x^2+y^2