2.分解因式:a(a-1)(a-2)-6

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2.分解因式:a(a-1)(a-2)-6

2.分解因式:a(a-1)(a-2)-6
2.分解因式:a(a-1)(a-2)-6

2.分解因式:a(a-1)(a-2)-6
a(a-1)(a-2)-6
=a^3-3a^2+2a-6
=a^2(a-3)+2(a-3)
=(a^2+2)(a-3)

解:
a(a-1)(a-2)-6
=(a^2-a)(a-2)-6
=a^3-a^2+2a-6
=a^2(a-3)+2(a-3)
=(a^2+2)(a-3)