Respuesta :

Now,

x^2 - x - 12

or, x^2 - 4x + 3x - 12

or, x (x - 4) + 3 (x - 4)

(x - 4) (x + 3)

So, The right answer is

A) x + 3

D) x - 4

This two binomial that are factor of this trinomial...

I hope you understand...