若36x^2-12xy+y^2=0,则x/y+y/x的值是
已知3x*+xy-2y*=0,求(x/y)-(y/x)-(x*+y*)/(xy)的值.*是平方
已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?
若实数xy满足(x+y+2)(x+y-1)=0,则x+y的值是
若x+y-5xy=0,求(2x-3xy+2y)/(x+2xy+y)的值
x的平方-2xy+y的平方-x+y-1=0,则x-y的的值是?
已知2x方—3xy+y方=0,则y/x+x/y的值是 ( )
已知(x-2y)=y(2y-x),则x²-y²/xy的值是?
若x+y=-3 xy=1 则x^2+y^2的值是
若(x-1)²+|-y+2x|=0,则代数式2xy/x+y的值是?
若|2x+y-1|+(x-2y)²=0,则x²+xy+y²的值为?
已知xy/x+y=2,则代数式3x-5y+8y/-x+3xy-y的值
若x,y满足x^+2y^-2xy+1=0,求xy的值