48/x+y +8/x-y=1024/x+y+14/x-y=14求这两个联立方程.怎么解,
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x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2
化简 x / y(x+y) - y / x(x+y) =
(X+y )²-8(x+y)+48
(x-8y)(x+y)
x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空
【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y)
y=x(x
【2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2】/2(x-y)^2=
(x+y)^2-8(x+y)+48=
(x+y)^2-8(x+y)+48=
{(x,y) |x|+|y|
x>y?x:y
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+x+x+x+y+y+y=56
X+Y-8X+10Y+41=O,求X/Y-Y/X的值
Y+X+X=36 Y-X-X=8 X=?Y=?
若x+y=8,x²-y²=48,则y-x=