For f(x) = 4x +1 and g(x) = x2 - 5, find (f - g)(x)

(f - g)(x) = 4x +1 - ( x^2 - 5)
(f - g)(x) = 4x + 1 - x^2 + 5
(f - g)(x) = -x^2 + 4x + 6
Answer is C.
-x^2 + 4x + 6