+1491 Hey Katie nice to see you back again.
The trick to these kind of problems is to factor the numerator so that it could become two binomials, like so:
(x^2 - x - 6) = (x + 2) (x - 3)
(x + 2) (x + 2)
Since there is an "(x + 2)" on both the numerator and denominator you cancel them out leaving you with you answer:
(x - 3)
