分解因式:(1)a^2+3a+2=_________(2)a^2-3a+2=________(3)a^2+9a+8=________(4)a^2-6a+8
问题描述:
分解因式:(1)a^2+3a+2=_________(2)a^2-3a+2=________(3)a^2+9a+8=________(4)a^2-6a+8
(5)a^2-a-2=_________(6)a^2-2a-8=_________(7)a^2-2a-8=________(8)a^2+7a-8=_________
答
1.(a+2)(a+1)
2.(a-2)(a-1)
3.(a+8)(a+1)
4.(a-4)(a-2)
5.(a-2)(a+1)
6.(a-4)(a+2)
7.(a-4)(a+2)
8.(a+8)(a-1)