已知X-3Y+4=0.求分式X^2-XY-6Y^2/2X+4Y的值
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![已知X-3Y+4=0.求分式X^2-XY-6Y^2/2X+4Y的值](/uploads/image/z/327091-67-1.jpg?t=%E5%B7%B2%E7%9F%A5X-3Y%2B4%3D0.%E6%B1%82%E5%88%86%E5%BC%8FX%5E2-XY-6Y%5E2%2F2X%2B4Y%E7%9A%84%E5%80%BC)
已知X-3Y+4=0.求分式X^2-XY-6Y^2/2X+4Y的值
已知X-3Y+4=0.求分式X^2-XY-6Y^2/2X+4Y的值
已知X-3Y+4=0.求分式X^2-XY-6Y^2/2X+4Y的值
已知X-3Y+4=0,即X-3Y=-4
X^2-XY-6Y^2=(x+2y)(x-3y)
所以X^2-XY-6Y^2/2X+4Y=(x+2y)(x-3y)/2X+4Y=x-3y/2=-2