Answer:
1
sorry if I'm wrong, I'm in the 7th grade lol, did my best :) hope I sortof helped
Step-by-step explanation:
5-2=3
square root of 3 with 3 is 1

Here's what I got for the first question.
Did you want answers for the second one? I couldn't read that part of the image very well, if you did.
1. A and B
2A. 1
2B. 4
3B. 4
3A. 2y and y
3B.none
3C. 5x and x squared
Not completely sure though
X(5x-2) thats how you factor