It is essential that you use the symbol " ^ " to denote exponention. See the following changes I have made.
9u^2v and which term or terms are like terms? 15u^2v. Why? because both have "u^2" in them.
Answer:
Step-by-step explanation:

Answer:
Answer is 7cm,8cm,10cm
Step-by-step explanation:
A^2+B^2=C^2
Answer:
1 and 2
Step-by-step explanation:
I hope this helps you out!
He sells it at $80 which gives him a profit of $5!