800x+1200y=436650x+800y=240结果X,Y是多少?

800x+1200y=436650x+800y=240结果X,Y是多少? 【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2= Y+X+X=36 Y-X-X=8 X=?Y=? x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 y+y+x=10,x+y+x=8,y=?,x=? 已知x-y=8,（x+y)(x-y)=32,求x,y的值 X+Y-8X+10Y+41=O,求X/Y-Y/X的值 化简 x / y(x+y) - y / x(x+y) = y=x(x (x-8y)(x+y) （x+2y)(x-2y)-(2y-x)(-2x-y)其中x=8,y=-8 已知X*X+Y*Y+6X-8Y+25=0 求（Y/X)+(X/Y)-2=? [(x+2y)(x-2y)-(x-2y)^2+8y(x+y)]除以4x= x*x+2x-y*y+6y-8=0,x+y不等于2,求x-y的值 x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空 (x+y)/y=8/3则x/y=__ y/x-y=___ (x+y)/y=8/3则x/y=__ y/x-y=___ 12y(x-y)^2-8(x-y)^3=?