Algebra 2 - Composite Functions

Question

How do you set these problems up?

g(a)= -2a^2 + 4a

h(a)= a - a

find (g+h)(a)

Answer 1

I think you made a mistake on h(a) because a - a is just zero but (g+h)(a) means g(a) + h(a) so just add the two functions together