因式分解a 3-6a 2+5a+12
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因式分解a 3-6a 2+5a+12
因式分解a 3-6a 2+5a+12
因式分解a 3-6a 2+5a+12
a^3-6a^2+5a+12
=a^3-6a^2-7a+12a+12
=a(a+1)(a-7)+12(a+1)
=(a+1)(a^2-7a+12)
=(a+1)(a-3)(a-4)
因式分解a 3-6a 2+5a+12
因式分解a 3-6a 2+5a+12
因式分解a 3-6a 2+5a+12
a^3-6a^2+5a+12
=a^3-6a^2-7a+12a+12
=a(a+1)(a-7)+12(a+1)
=(a+1)(a^2-7a+12)
=(a+1)(a-3)(a-4)