Question

Let

f(x) = x^2 + 5x
and
g(x) = 2x^2 − 4.

Find the function.
f + g


(f + g)(x) = ?

Answer 1

f + g = 3x^2 + 5x - 4

Explanation:

We see addition of functions.

f(x) = x^2 + 5x

g(x) = 2x^2 - 4

Simply add the expressions.

f + g = (x^2 + 5x) + (2x^2 - 4) = 3x^2 + 5x - 4

f + g = 3x^2 + 5x - 4