Let x, y Z. Prove that (x + 1)y2 is even if and only if x is odd or y is even
Chapter 3, Problem 3.51(choose chapter or problem)
Let x, y Z. Prove that (x + 1)y2 is even if and only if x is odd or y is even.
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