x(x+y)(x-y)-x(x+y)的二次方,提公因式
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x(x+y)(x-y)-x(x+y)的二次方,提公因式
![x(x+y)(x-y)-x(x+y)的二次方,提公因式](/uploads/image/z/17591829-69-9.jpg?t=x%EF%BC%88x%2By%EF%BC%89%EF%BC%88x-y%EF%BC%89-x%EF%BC%88x%2By%EF%BC%89%E7%9A%84%E4%BA%8C%E6%AC%A1%E6%96%B9%2C%E6%8F%90%E5%85%AC%E5%9B%A0%E5%BC%8F)
x(x+y)(x-y)-x(x+y)²
=x(x+y)(x-y-x-y)
=-2xy(x+y)
再问: 可以再详细吗
再答: x(x+y)(x-y)-x(x+y)² =x(x+y)[(x-y)-(x+y)] =x(x+y)(x-y-x-y) =x(x+y)*-2y =-2xy(x+y)
=x(x+y)(x-y-x-y)
=-2xy(x+y)
再问: 可以再详细吗
再答: x(x+y)(x-y)-x(x+y)² =x(x+y)[(x-y)-(x+y)] =x(x+y)(x-y-x-y) =x(x+y)*-2y =-2xy(x+y)
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