x^2+y^2+2x-6y+10=0,1求xy的值

x^2-2xy+y^2+6y+10=0求x,y的值. 已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值? x^2+y^2+2x-6y+10=0,1求xy的值 已知3x*+xy-2y*=0,求(x/y)-(y/x)-(x*+y*)/(xy)的值.*是平方 已知x+y=-1,xy=-2,求代数式-5（x+y)+(x-y)+x(xy+y)的值 若x,y满足x^+2y^-2xy+1=0,求xy的值 已知x>0,y>0,且x+6y=5根号xy,求(2x+根号xy-y)分之(x+根号xy+2y)的值 若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值 x的平方-2xy+y的平方-6y+10=0,求x,y 已知y-x-2xy=0,求3x+xy-3y/y-xy-x的值 已知y-x-2xy=0,求(3x+xy-3y)\(y-xy-x)的值 已知xy/x+y=6,求3x-2xy+3y/-x+3xy-y的值.