factor this trinomial:

12x^2 - 11x + 2

It's going to be

(x-a)(12x-b) or
(2x-a)(6x-b) or
(3x-a)(4x-b)
where ab=2. so either a=1,b=2 or a=2,b=1

Looks like (3x-2)(4x-1)