Answer Happy • 1. Let 𝑥, 𝑦 ∈ Z. Prove that (𝑥 + 1)𝑦^2 is even if and only if 𝑥 is odd or &#1199

Page 1 of 1

1. Let 𝑥, 𝑦 ∈ Z. Prove that (𝑥 + 1)𝑦^2 is even if and only if 𝑥 is odd or &#1199

Posted: Tue May 10, 2022 8:31 pm

by answerhappygod

1. Let 𝑥, 𝑦 ∈ Z. Prove that (𝑥 + 1)𝑦^2 is even if and only if 𝑥 is odd or 𝑦 is even.  
** please write formal proof**