16 June 2021

• curprev 16:5516:55, 16 June 2021 Purplepenguin2 talk contribs 1,242 bytes +336 No edit summary

19 February 2019

• curprev 23:4723:47, 19 February 2019 Sevenoptimus talk contribs m 906 bytes +72 Added box at the bottom

26 January 2019

• curprev 18:5018:50, 26 January 2019 Sevenoptimus talk contribs m 834 bytes −40 Reverted incorrect edit
• curprev 18:4918:49, 26 January 2019 Sevenoptimus talk contribs m 874 bytes +40 Further improved clarity of solution
• curprev 18:4318:43, 26 January 2019 Sevenoptimus talk contribs m 834 bytes +9 Further fixed formatting
• curprev 18:4318:43, 26 January 2019 Sevenoptimus talk contribs 825 bytes −73 Improved clarity of solution

16 July 2018

• curprev 17:5817:58, 16 July 2018 Skyraptor79 talk contribs 898 bytes +898 Created page with "==Problem== If <math>xy = a, xz =b,</math> and <math>yz = c</math>, and none of these quantities is zero, then <math>x^2+y^2+z^2</math> equals: <math>\textbf{(A)}\ \frac{ab+..."