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歡迎您訪問數(shù)學(xué)考題練習(xí):把多項(xiàng)式(m+1)(m-1)+(m-1)提取公!

數(shù)學(xué)考題練習(xí):把多項(xiàng)式(m+1)(m-1)+(m-1)提取公

更新時(shí)間:2024-01-12 14:00:54作者:貝語(yǔ)網(wǎng)校

把多項(xiàng)式(m+1)(m-1)+(m-1)提取公因式(m-1)后,余下的部分是

A.m+1

B.2m

C.2

D.m+2

試題答案

D

試題解析

先提取公因式(m-1)后,得出余下的部分.

解答:(m+1)(m-1)+(m-1),

=(m-1)(m+1+1),

=(m-1)(m+2).

故選D.

點(diǎn)評(píng):先提取公因式,進(jìn)行因式分解,要注意m-1提取公因式后還剩1.

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