Let x, y Z. Prove that if 3
Chapter 4, Problem 4.4(choose chapter or problem)
Let x, y Z. Prove that if 3| x and 3| y, then 3 | (x 2 y2). 4
Unfortunately, we don't have that question answered yet. But you can get it answered in just 5 hours by Logging in or Becoming a subscriber.
Becoming a subscriber
Or look for another answer