The correct simplification of the expression is 9c^2 i think.
Answer:
Step-by-step explanation:
3.
add exponents
4.
multiply exponents
5.
distribute and multiply exponents
6.
multiply and then add exponents
7.
distribute and multiply exponents
8.
multiply and then add exponents
The answer is 7 3/4 inches.
I noticed the word "train" in the problem and I knew I had to help you! :)