Answer:
5?
Step-by-step explanation:
Why am I here, I cant math.
Answer:
17) 
18) 
19) 
20) 
Step-by-step explanation:
If you would like to simplify this equation, the only thing that you can do is simplify the radical.

=

Since 3 appears twice, we can factor it out of the radical. This gives us our answer of:
Answer:
21
Step-by-step explanation:
All of them except TR and PH