因式分解(a+3b)^2+a62+3ab-ac-3bc
问题描述:
因式分解(a+3b)^2+a62+3ab-ac-3bc
答
(a+3b)²+a²+3ab-ac-3bc
=(a+3b)²+a(a+3b)-c(a+3b)
=(a+3b)(a+3b+a-c)
=(a+3b)(2a+3b-c)