因式分解:-a³-4a²+12a=

问题描述:

因式分解:-a³-4a²+12a=

-a³-4a²+12a=﹣a﹙a²+4a-12﹚=﹣a﹙a+6﹚﹙a-2﹚

-a³-4a²+12a
=-a(a²+4a-12)
=-a(a+6)(a-2)

-a³-4a²+12a
=-a(a²+4a-12)
=-a(a+6)(a-2)