因式分解a(a-1)(a-2)-6

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因式分解a(a-1)(a-2)-6因式分解a(a-1)(a-2)-6因式分解a(a-1)(a-2)-6a(a-1)(a-2)-6=a^3-3a^2+2a-6=a^2(a-3)+2(a-3)=(a^2+

因式分解a(a-1)(a-2)-6
因式分解a(a-1)(a-2)-6

因式分解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)

a^3-2a^2-a^2+2a+6
=a^3+a^2+2a+6