初中数学分式已知x/y=2,求(x*x-xy+3y*y)/x*x+xy+6y*y的值
初中数学分式已知x/y=2,求(x*x-xy+3y*y)/x*x+xy+6y*y的值
已知x-y/xy=3,求分式2x+3xy-2y/x-2xy-y的值.
已知1/x+1/y=3,求分式3x-2xy+3y/x+xy+y的值
已知,1/x+1/y=5.,求分式3x+xy+3y/x-2xy+y的值
已知xy/x+y=二分之一,求分式3x-xy+3y/x-xy+y的值
八下数学分式(1)已知1/x-1/y=5,求分式3x+5xy-3y/x-3xy-y的值(2)已知x+1/x=3,求分式x
已知xy=2,x-y=3,求(x+y)(x-y)-y^2-(6x^2y-2xy^2)/2y的值.
已知xy=-2,x-y=3,求(x+y)(x-y)-y平方+(x-y)平方-(6x2y-2xy平方)/2y的值
若(y-x)/xy=3,求分式(2x+3xy-2y)/(x-2xy-y)的值
已知1/x-1/y=2001,求分式x-xy-y/x-y的值
已知1/x+1/y=3,求分式(3x-3xy+3y)/(x+xy+y)的值
已知1/x-1/y=3,求分式3x-xy+3y/x+xy+y的值.