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歡迎您訪問數學考題練習：下列恒等變形中，屬于因式分解的個數有①a2-b！

數學考題練習：下列恒等變形中，屬于因式分解的個數有①a2-b

更新時間：2024-01-12 12:53:45作者：貝語網校

下列恒等變形中，屬于因式分解的個數有

①a2-b2＝(a+b)(a-b)

②(a-1)2＝a2-2a+1

③x2-y2-1＝(x+y)(x-y)-1

④(x-y)2+(y-x)3＝(x-y)2(1-x+y)

A.1個

B.2個

C.3個

D.4個

試題答案

B

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