若X^2+y^2+2x-6y+10=0,求y^2x-x^2011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?
已知:x+2y=2011 求代数式{(x^+y^)-(x-y)^+2x(x+y)}/2x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
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