Enter your answer and show all the steps that you use to solve this problem in the space provided.

f
(
x
)
=
9
x
3
+
2
x
2

5
x
+
4

and
g
(
x
)
=
5
x
3

7
x
+
4
.
what is
f
(
x
)

g
(
x
)
?
Show all of your steps and write your final answer in factored form.