x(x+y)(x-y)-x(x-y)的平方 提公因式

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x(x+y)(x-y)-x(x-y)的平方提公因式x(x+y)(x-y)-x(x-y)的平方提公因式x(x+y)(x-y)-x(x-y)的平方提公因式x(x+y)(x-y)-x(x-y)²=

x(x+y)(x-y)-x(x-y)的平方 提公因式
x(x+y)(x-y)-x(x-y)的平方 提公因式

x(x+y)(x-y)-x(x-y)的平方 提公因式
x(x+y)(x-y)-x(x-y)²
=x(x-y)[(x+y)-(x-y)]
=x(x-y)(2y)
=2xy(x-y)
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x(x+y)(x-y)-x(x-y)²
=x(x-y)[(x+y)-(x-y)]
=x(x-y)(2y)
=2xy(x-y)
先提公因式x(x-y)