2.分解因式:a(a-1)(a-2)-6

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 12:04:48

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)