Answer:

Step-by-step explanation:
Answer:
They're all like terms (x)
The answer should be A. 36.
Answer:
Sam
30
Step-by-step explanation:
Sam made a mistake when he said
. The steps should have been:

You are supposed to square 5 first before multiplying 2. Sam multiplied by 2 first. The correct answer is 30.
It’s A
As it says in the answer, you usually add / subtract the exponents when needed.