x-y=12 5x-5y=( )
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x-y=125x-5y=()x-y=125x-5y=()x-y=125x-5y=()
x-y=12 5x-5y=( )
x-y=12 5x-5y=( )
x-y=12 5x-5y=( )
(x+y-5)*(x+y-5)+(x-y+3)=0 x*x-y*y
已知:3x-5y=0,求x/y,x-y/y,x-y/x
x+y=5; x^y+y^x=17
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
若(X×X+Y×Y)(X×X+Y×Y-5)=36,则X×X+Y×Y=
(X-Y)(X+Y)=5 能解么
5x-4y(y-x)=?
解方程组 2x-y=5 2y/x-x/y=12x-y=52y/x-x/y=1
已知X.x+y.y-4x+2y+5=0,求4X.X-12X Y+9Y.y的值
y-x=x-5
Y={X (-5
Y={X (-5
2(x-y)=5y,x-y=-5
x+y/y=5/4,则x/y=----------------
x-y=12 5x-5y=( )
x-y / 5y= (y-x)^2 / ( )
已知:4x = 5y,求(x+y) :y
x*x+2x+y*y-4y+5=0 x= y=