已知实数x,y满足 根号x-2 + (y+1)²=0,则x-y等于

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 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 已知实数x,y满足x+2根号y=2,化简二次根式根号2x+y. 已知实数X,Y满足根号2X-Y-8+根号X+2y+1=0,求XY. 已知实数x,y满足根号(x-1)+y^2=4y-4,求(x-y)^2012的值 已知实数x,y满足x-y 已知实数X,Y满足{|x+y| 已知实数x,y满足根号2x-y的值+5x-6=y-根号y-2x,求x,y的值 已知实数X,Y满足2 已知实数xy满足x+2y 已知实数xy满足 x+y-2 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 已知实数x,y,z满足x+y+z=2根号x-1+2根号y-1+2根号z-1求X+2Y+3Z 已知x,y都为实数,满足y=根号x-2+根号2-x+3,xy的值? 已知实数x,y满足y=根号x-1+根号1-x+8求根号x+y.的平方根 已知实数x,y满足3x+4y=5,则根号x^2+y^2的最小值等于 已知实数x,y满足3x+4y=5,则根号x^2+y^2的最小值等于 已知实数x,y满足 根号x-2 + (y+1)²=0,则x-y等于