将x^2-xy变形为x(x-y)是( )将x(x-y)变形为x^2-xy是( )

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将x^2-xy变形为x(x-y)是( )将x(x-y)变形为x^2-xy是( )
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将x^2-xy变形为x(x-y)是( )将x(x-y)变形为x^2-xy是( )
将x^2-xy变形为x(x-y)是( )将x(x-y)变形为x^2-xy是( )

将x^2-xy变形为x(x-y)是( )将x(x-y)变形为x^2-xy是( )
都对,
一个是因式分解,一个是整式乘法.