Answer:
(f + g)(x) = x² + 3x + 5
Step-by-step explanation:
There are two different functions f(x) and g(x) with domain the set of all real numbers and given by
f(x) = 3x + 5 and
g(x) = x²
Now, we have to find the function (f + g)(x) which is obtained by simple arithmetic addition of the two functions.
Therefore, (f + g)(x) = f(x) + g(x) = (3x + 5) + (x²) = x² + 3x + 5 (Answer)
