Question

Question 3 of 10

If f(x) = 2x2 + 1 and g(x) = x2 - 7, find (f + g)(x).
O A. 3x2 + 8
O B. x + 8
O C. 3x2 - 6
D. x2 - 6

Answer 1

C. 3x^2 -6

Explanation:

f(x) = 2x^2 +1

g(x) = x^2 -7

(f+g)(x) is simply the sum of the above functions.

(f+g)(x) = 2x^2 +1 + x^2 -7 = 3x^2 -6