Answer:
(X+4)(x+4)
Explanation:
First find two numbers that multiply to 16 but add up to 8. That is 4 times 4. Then find the root of x squared which is x. The insert x + 4 in parenthesis for both sets because they are both positive. The two sets of parenthesis are supposed to be multiplied with the FOIL method to get x^2+8x+16. Hope this helps :)