因式分解 6a²b-2ab和(m+1)²-9
问题描述:
因式分解 6a²b-2ab和(m+1)²-9
答
6a²b-2ab
=2ab(3a-1)
(m+1)²-9
=(m+1+3)(m+1-3)
=(m+4)(m-2)