DHRJ007 Senior | Next Rank: 100 Posts View User Profile Posts: 31 Joined: Thu Sep 17, 2020 9:27 am Followed by:1 members Number system by DHRJ007 » Mon Sep 21, 2020 9:28 am Timer 00:00 Your Answer A B C D E Global Stats If w, y, and z are positive integers, and w = y – z, is w a perfect square? (1) y + z is a perfect square. (2) z is even. Top Quote
