5. (25 points) Let n be an integer. Prove that if 3 does not divide n2 – 1, then 3 divides n.
Posted: Thu May 12, 2022 6:34 am
- 5 25 Points Let N Be An Integer Prove That If 3 Does Not Divide N2 1 Then 3 Divides N 1 (10.77 KiB) Viewed 34 times
5. (25 points) Let n be an integer. Prove that if 3 does not divide n2 – 1, then 3 divides n.