Respuesta :

Given:

f(x) = x + 1

g(x) = 3x²

To find (f + g)(x), sum the like terms of the function.

(f + g)(x) = f(x) + g(x) = x + 1 + 3x²

(f + g)(x) = 3x² + x + 1

Answer: 3x² + x + 1