History of MathML: Deriving the Quadratic Formula Revision history for: English (US) Sep 6, 2016, 4:51:11 AM NewtSalamander Making the first sentence a bit clearer. Previous Sep 6, 2016, 4:34:50 AM NewtSalamander Setting SEO summary again Previous Sep 6, 2016, 4:31:10 AM NewtSalamander Setting SEO summary Previous Aug 19, 2016, 1:58:41 PM maryannetpdx Previous Aug 18, 2016, 3:07:59 PM maryannetpdx Needs more text. The red text should be black. The red text reads okay Previous Mar 9, 2014, 6:01:08 AM SphinxKnight Previous Feb 22, 2014, 2:46:29 AM aseijo1 Previous Feb 14, 2014, 1:55:29 AM fred.wang Previous Feb 14, 2014, 1:55:17 AM fred.wang fix some markup errors Previous Jan 8, 2014, 2:53:37 AM fred.wang Reverting to revision Sep 10, 2013 1:00:26 PM