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因式分解,m的3次方-2m-m-2
人气:260 ℃ 时间:2019-10-24 03:38:23
解答
m的3次方-2m-m-2
=m(m²-1)-2(m+1)
=m(m-1)(m+1)-2(m+1)
=(m+1)(m²-m-2)
=(m+1)(m+1)(m-2)
=(m+1)²(m-2)
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