Question

How do you factor `6a^2-21a+15`?

Answer 1

`3(a-1)(2a-5)`

Explanation:

`6a^2-21a+15=3(2a^2-7a+5)=3(2a^2-2a-5a+5)=3{2a(a-1)-5(a-1)})=3(a-1)(2a-5)`[Ans]