User contributions
- 22:35, 7 January 2020 (diff | hist) . . (+178) . . 2018 AMC 10B Problems/Problem 21 (Undo revision 114482 by Tbnrfrags (talk)) (Tag: Undo)
- 22:30, 7 January 2020 (diff | hist) . . (-178) . . 2018 AMC 10B Problems/Problem 21 (→Solution 3)
- 18:44, 29 January 2019 (diff | hist) . . (+1) . . Simon's Favorite Factoring Trick (→About)
- 18:43, 29 January 2019 (diff | hist) . . (-2) . . m Simon's Favorite Factoring Trick (→About)
