Question 330779
You need to factor the top by bringing the 4 outside the brackets:


4(x^2 - 4)


Now x^2-4 is a difference of squares, so factor it as well:


4(x^2 - 4)
=4(x+2)(x-2)


On the bottom, rearrange it so x is first:

(2-x) = -(x-2)


Now you should have this overall, combining top and bottom:


4(x+2)(x-2)/-(x-2)


Cancel out the (x-2) terms, leaving you with:


-4(x+2)