若实数x.y满足根号x+y-3+(x-2y)^2=0.则根号2xy=
已知正实数x y满足x-根号xy-2y=0求 x+3根号xy+2y/2x-2根号下xy-y
若实数x,y满足x根号(1-x)=根号(y-2)+根号(x-1),求3x²+xy-y²/x²
若x.y都是实数,且满足y=根号x-4 + 根号4-x + 1 ,求3(-xy+2x)-2(3x-y)的值
若实数x,y满足根号x-2 +(3-y)^2=0,则代数式xy-x的值为
若实数x,y满足根号下(x+2)加根号下(y-根号下3)的平方=0,则xy的值是()
已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y
若实数x,y满足y=根号2x-1+根号1-2x+1/3,求代数式x^2-2xy+y^2的值
若实数x,y满足根号x+2+(y—根号3)平方2=0,则xy的值是
若实数x,y满足根号下x+2+(y-根号下3)平方=0,则xy的值是?
已知实数x,y满足x^2+根号2y=根号3且x不等于y求x+y和xy的值
已知实数x,y满足关系式│x+y-3│+根号(xy-6)=0,求代数式(x+2y)/y-x的值
已知实数x,y满足下x^2+根号2y=根号3,y^2+根号2x=根号3,求x/y+y/x