Question

If x>2, then x^2-x-6/x^2-4

Answer 1

X(exponent 2) - x - 6
-------------------------   =
x(exponent 2) -4 

(x-3)(x+2)
-------------   =
(x-2)(x+2)

Cancel out the x + 2 factors. 

x-3
----      <== ANSWER
x-2

Hope this helps! :)