若x^2+y^2-10x-6y+34=0,求（x-y)/(x+y)的值

已知x^2-2x+y^2+6y+10=0,求分式x-y/x+y的值 若x^2+y^2-8x-10y+41=0,求x/y+y/x的值 已知：4x^2+y^2-4x-6y+10=0,求y/x-x/y的值 X^2+y^2-2x+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? 若|x+y-1|+（x-y-2)²=0,求代数式（x+2y)(x-2y）-（2x-y)(-y-2x)的值. x²-2x+y²+6y+10=0,求—9(x+y)²+(3x-2y)(2y+3x)的值 若x、y满足2x+y=6,x-3y=1,求7y(x-3y)²-2(3y-x)³的值 已知x^2+y^2-10x-12y+61=0,求x/y-y/x的值 已知x^2+y^2-6x-8y+25=0,求分式y/x - x/y的值 已知x^2+y^2-6x-8y+25=0 求y/x-x/y的值 已知x,y满足x^2+y^2-6x+8y+25=0,求y^x的值