29 January 2018

• curprev 17:4917:49, 29 January 2018 Mitko pitko talk contribs m 1,164 bytes −12 →Solution

28 January 2018

• curprev 13:4213:42, 28 January 2018 Mitko pitko talk contribs 1,176 bytes +820 No edit summary

5 December 2016

• curprev 19:5419:54, 5 December 2016 Mathisfun04 talk contribs 356 bytes +12 →Solution

20 October 2014

• curprev 00:1900:19, 20 October 2014 Timneh talk contribs 344 bytes +344 Created page with "== Problem == (a) Demonstrate that every odd number <math>2n+1</math> can be expressed as a difference of two squares. (b) Demonstrate which even numbers can be expressed as a ..."