3a^2-10a+3=0怎么得到的(3a-1)(a-3)=0

问题描述:

3a^2-10a+3=0怎么得到的(3a-1)(a-3)=0

3a^2-10a+3=0
3a^2-a-9a+3=0
a(3a-1)-3(3a-1)=0
(3a-1)(a-3)=0
(同意请采纳)