Question 57343
You can easily do it by trail and error, but you can also look at my example if you get fed up with it.
2x^2 - 14x + 24
2(x^2 - 7x + 12)
2(x^2 - 4x - 3x + 12)
2((x^2 - 4x) + (-3x + 12))
2(x(x - 4) - 3(x - 4))
2(x - 3)(x - 4)
(2x - 6)(x - 4)