实数X、y满足y=根号2-X+根号X-2+1,求X^2-y^2008的值

实数x,y满足y=(根号2x)+(根号1-2x),求y最大值. 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 +先化简:根号2x*根号（x/y）*{根号（y/x）/根号（1/y）}再求值.其中实数x,y满足:先化简:根号2x*根号（x/y）*{根号（y/x）/根号（1/y）}再求值.其中实数x,y满足:y=根号（x-3）+根号（6-2x）+2 实数X、y满足y=根号2-X+根号X-2+1,求X^2-y^2008的值 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 若实数x、y满足x平方+y平方-4x-2y+5=0,求根号8y-2x分之（根号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x2+(根号2)*y=根号3,y2+(根号2)x=根号3且x≠y,求xy的值 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满足根号(x-1)+y^2=4y-4,求(x-y)^2012的值 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x^2+根号2y=根号3,y^3+根号2x=根号3，且x不等于y，求x+y和xy的值 已知实数x,y 满足 x^2+根号下2*y=根号3 ,y^2+根号下2*x=根号3 x不等于y 则x/y+y/x的值是多少? 1）先化简：根号2x乘以根号y分之x乘以（根号x分之y除以根号y分之一）再求值.其中实数x,Y满足; 已知实数x,y满足根号[4x-y+11]+根号[1/3y-4x-3]=0,求2x根号[x/y]*1/2y根号[y^2/x]