若2x^2+9xy-5y^2=0(y≠0),求x/y的值
若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+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3x*+xy-2y*=0,求(x/y)-(y/x)-(x*+y*)/(xy)的值.*是平方
已知y=3xy+x,求代数式2x+5xy-2y/x-2xy-y的值(xy≠0)
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*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*
已知xy≠0,且2x+3xy-2y=0,求(x+y)/(x-y)的值.
若x,y满足x^+2y^-2xy+1=0,求xy的值
已知x^2+3xy-4y^2=0(y≠0),求x-y/x+y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
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