Question

If f(x)=x/2-3 and g(x)=3x squared+x-6 find (f+g)(x)

Answer 1

The definition is the following:

$(f+g)(x) = f(x)+g(x)$

So, we simply have to sum the expressions:

$f(x)+g(x) = \dfrac{x}{2}-3 + 3x^2+x-6 = 3x^2 +\dfrac{3x}{2}-9$