若x^2+9y^2-2x+24y+17=0,求x^2与y^-2

x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 若x^2+9y^2-2x+24y+17=0,求x^2与y^2 若x^2+9y^2-2x+24y+17=0,求x^2与y^-2 若2/x-1/y=3,求[y/x-y/x-y(x-y/x-x+y)]/x-2y/x的值 若f(x+y,y/x)=x^2-y^2,则F(X,Y)= 4(x-y)-3(x-y)=9 5(x-y)+2(x-y)=11 3(x+y)-2(x-y)=11 4(x+y)+3(x-y)=9 若(x-y)/(x+y)=3 则(x+2y)/(6x-7y)等于 若x*x+y*y=x+y-1/2,求x,y的值如题 若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(x*x+5xy+y*y)/(x*x+2xy+y*y)的值 x+y/2+ x-y/2=6 2(x+y)-3x+3y=24 求X Y 已知2/x+2/y=根号24,求 x/y(x-y) - y/x(x-y)的值 已知2/x 2/y=根号24,求 x/y(x-y) - y/x(x-y)的值 先化简再求值 x(9x-y)-y(y-x)+(x-y)的平方,其中x=-1,y=2 若2x+3y=2004,则代数式2(3x-2y)-(x-y)+(-x+9y)=... 若2x+y=2012,则代数式2(3x-2y)-(x-y)+(-x+9y)= 若2x=3y,则(x*x+y*y)/x*x=? 若x^2+y^2+2x-8y=-17,求y/x的值