Answer:
D,
Explanation:
Basically you have to simplify the (x² - 16). Since it is the difference of 2 squares, it's simplified as (x + 4)(x - 4). Now that everything is simplified, you can start doing the multiplication.
, You can cancel out the (x+4)'s
, There is a common factor between 7x and 6x. The common factor is x. So cancel out both "x".
You end up with this,