若x+2y－2xy+6y+9=0,则x的y次方的值等于

若x+2y－2xy+6y+9=0,则x的y次方的值等于 若2x^2-6xy+9y^2-4x+4=0,则y/x-x/y=若2x^2-6xy+9y^2-4x+4=0,则y/x-x/y=? 若|x-3|+（y+2）=0,则（x-y+4xy/x-y）（x+y-4xy/x+y）的值是 若|x-3|+（y+2）²=0,则（x-y+4xy/x-y）（x+y-4xy/x+y）的值是 若(x*x+y*y)(x*x+y*y)-4x*x*y*y=0,求代数式(x*x+5xy+y*y)/(x*x+2xy+y*y)的值 若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值 若实数xy满足x^2+y^2-2x+6y=0 则x-2y的最大值 化简求值,若X方-2XY+Y方+1XY-11=0,求X方+6XY+9Y方分之X方-25Y方*5X-25Y分之X+3Y的值 若x^2-6xy+9y^2=0.则x:y的值为 若2x+y=6,且x>0,y>0,则xy的最大值是? 若x²+y²+6x-2y+10=0 则分式x-2y/x³-4x²y+4xy²的值 若3x^2+xy-2y^2=0,求（x+y/x-y+4xy/y^2-x^2)除以(x^2+2xy-3y^2/x^2-9y^2)的值 已知x^2+9y^2-2x-6y+2=0,求{-（xy/（x-y）^2}^4*(y^2-xy/x)^3*x^4/y^10/(x/xy-y^2)^5的值 若9x^2+y^2+24x-6y+25=0,则xy= 若x、y满足2x的平方-6xy+9y的平方-4x+4=0,则y的x次方= 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-5)²+(xy-6)²=0,则（x+y)²-2xy的值为? 若x.y>0,9x+y=xy,则x+y的最小值为?