(X-Y)(X+Y)=5 能解么
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(X-Y)(X+Y)=5能解么(X-Y)(X+Y)=5能解么(X-Y)(X+Y)=5能解么不能解,任意给x值都能求出Y值
(X-Y)(X+Y)=5 能解么
(X-Y)(X+Y)=5 能解么
(X-Y)(X+Y)=5 能解么
不能解,任意给x值都能求出Y值
(X-Y)(X+Y)=5 能解么
（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-x+y/y-(x+y)(x-y)/y² y/x=2
5x-4y(y-x)=?
化简 x / y(x+y) - y / x(x+y) =
y-x=x-5
x(x+y)(x-y)-y(y+x)(y-x)=(x-y)( )填空
Y={X (-5
Y={X (-5
2(x-y)=5y,x-y=-5
x+y／y=5／4,则x／y=----------------
x-y / 5y= (y-x)^2 / ( )
已知：4x = 5y,求(x+y) ：y
x*x+2x+y*y-4y+5=0 x= y=