Answer:
addition
Step-by-step explanation:
The given expression is 
We want to determine the last operation performed when evaluating this expression for x=3.
We substitute to get:

Multiply within the parenthesis to get:

Subtract to get:

Evaluate the exponent to get:
4+4
Add to obtain:
8
Hence the final operation is addition
The correct answer should be :
Option 3 : 
Hope this helps,
Davinia.
Answer:
Simplified: -4u? + 5u^2 - 5u - 3
Step-by-step explanation:
Answer:
36
Step-by-step explanation:
Substitute the A for the 9, since A=9, and multiply the numbers