若x+2y=0,xy不等于0,求分式xy+y^2分之x^2+3xy的值
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![若x+2y=0,xy不等于0,求分式xy+y^2分之x^2+3xy的值](/uploads/image/z/318771-27-1.jpg?t=%E8%8B%A5x%2B2y%3D0%2Cxy%E4%B8%8D%E7%AD%89%E4%BA%8E0%2C%E6%B1%82%E5%88%86%E5%BC%8Fxy%2By%5E2%E5%88%86%E4%B9%8Bx%5E2%2B3xy%E7%9A%84%E5%80%BC)
若x+2y=0,xy不等于0,求分式xy+y^2分之x^2+3xy的值
若x+2y=0,xy不等于0,求分式xy+y^2分之x^2+3xy的值
若x+2y=0,xy不等于0,求分式xy+y^2分之x^2+3xy的值
x+2y=0
x=-2y
xy+y^2分之x^2+3xy
=x^2+3xy/xy+y^2
=4y^2-6y^2/-2y^2+y^2
=-2y^2/-y^2
=2