因式分解 6a²b-2ab和(m+1)²-9

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因式分解 6a²b-2ab和(m+1)²-9

因式分解 6a²b-2ab和(m+1)²-9
因式分解 6a²b-2ab和(m+1)²-9

因式分解 6a²b-2ab和(m+1)²-9
6a²b-2ab
=2ab(3a-1)
(m+1)²-9
=(m+1+3)(m+1-3)
=(m+4)(m-2)

6a²b-2ab=2ab(3a-1)
(m+1)²-9=(m+1-3)(m+1+3)=(m-2)(m+4)

6a²b-2ab=2ab(3a-1)
(m+1)²-9=(m+4)(m-2)

6a²b-2ab=2ab(3a-1)
(m+1)²-9=(m+1+3)(m+1-3)=(m+4)(m-2)

6a²b-2ab
=2ab(3a-1)
(m+1)²-9
=(m+1)²-3²
=[(m+1)+3][(m+1)-3]
=(m+1+3)(m+1-3)
=(m+4)(m-2)

6a²b-2ab=2ab(3a-1)
(m+1)²-9 =(m+4)(m-2)