Answer:
f(-3) = 9
Step-by-step explanation:
Lets define f(a) first where a is any integer,
f(a) is found out by putting the integer in the function in place of the variable
So for the given question

In order to find f(-3) we will put -3 in place of x
So putting -3,


So, the value of function at -3 is 9 ..
This is the answer ,you should first do the multiplication then the sum.
<h3>⚘Refer to the attachment!!</h3>