Answer:
C. Multiply 3 by 18
Step-by-step explanation:
Further explanation

It is going to be 15x if you are trying to simplify it
Answer:
C
Step-by-step explanation:
Bc i'm smart and i know things
If your question was (c+1)²...
(c+1)(c+1)
c² + c + c + 1
c² + 2c + 1