分解因式一:3a^2-10a+7 二:6m^2-m-12
问题描述:
分解因式一:3a^2-10a+7 二:6m^2-m-12
答
3a^2-10a+7
1 -1
3 -7
(a-1)(3a-7)
6m^2-m-12
3 4
2 -3
(3m+4)(2m-3)