[Function Composition] could someone help me with this answers or show work either is fine

Answer:
(h • g)(n) = 4n^2 + 2
Step-by-step explanation:
What we simply have to do here is to place g(n) into h(n)
Hence, we replace the n value in h(n) by the totality of g(n)
Thus, we have that
(2n)^2 + 2
= 4n^2 + 2