已知两圆x^2+y^2-10x-10x=0,x^+y^2+6x-2y-40=0.求
已知两圆x+y-2x+10y-24=0和x+y+2x+2y-8=0.求公共弦的长度
已知x^2+2x+y^2-6y+10=0 求(x+y)^2
已知x^2+y^2--6x--2y+10=0,求x+y/x--y
已知x^2-2x+y^2+6y+10=0,求分式x-y/x+y的值
已知:4x^2+y^2-4x-6y+10=0,求y/x-x/y的值
已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-x.
已知两圆x²+y²-2x-6y-1=0和x²+y²-10x-12y+m=0.⑴m
已知2x-y=10,求[(x²+y²)-(x-y)²+2y(x-y)]/4y
已知X-Y/X+Y=3,求代数式2(x-y)/X+Y-3X+Y/X+Y
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
已知x^2+y^2-10x-12y+61=0,求x/y-y/x的值
已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?