Answer:
6x
Explanation:
i am not quite sure why you have provided H(x), and i am assuming f(x) = 2x * 2 + 1
with that into consideration we can simplify f(x)
f(x) = 2x*2+1
= 4x+1
question -> f(x) + g(x)
= (4x+1) + (2x -1)
1 and -1 can get cancelled and 4x + 2x = 6x
thus the answer is 6x