已知5x2+2y2+2xy-14x-10y+17=0,则x=,y=

已知X2-2x+y2+6y+10=0,求（x2-2xy）/(xy+y2)的值 已知:x=3,y=-5,x2-2xy+y2/x2-y2的值是 已知2x=3y,求xy／(x2+y2)-y2／(x2-y2)的值 已知x2+y2-2x+4y+5=0,求(x^4-y^4)/(2x^2+xy-y^2)·[(2x-y)/(xy-y^2)] 已知x2+y2-10x-6y+34=0,求（x-y/x+y）2÷x2-y2/xy×x2+2xy+y2/x2-xy 的值. 已知x2+4y2+x2y2-6xy+1=0,求 x4-y4/2x-y 乘 2xy-y2/xy-y2 除以（x2+y2/x 已知实数x、y满足2x2-7xy+3y2=0,求x：y 已知x2+y2-2x-4y+5=0，则1xy+1(x+1)(y+1)+1(x+2)(y+2)+…+1(x+2010)(y 已知x2-2x+y2+6y+10=0,求多项式(2x+y)(2x-y)+(x+y)2-2(2x2-xy)的值 已知X2+Y2+8X+6Y+25=0 求代数式X2++XY+4Y2分之X2-4Y2 减X+2Y分之X的值 已知xy满足x2+y2-6x+2y+10=0,求立方根号x2-y2的值 已知2x-3*根号(xy)-2y=0(x>0),则x2+4xy-16y2除以2x2+xy-9y2的值是多少?