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Corrections for derivation of quadratic formula
1. capitals by Wkbj79 on 2006-10-12 23:17:25 (retracted)
2. spelling by Mathprof on 2006-07-19 21:36:56 (accepted)
3. Easier deriving by pahio on 2004-08-30 14:05:05 (accepted)
4. broken by yark on 2004-03-17 03:30:00 (accepted)
5. completing the square by matte on 2003-05-04 14:00:15 (accepted)
6. Derivation of Quadratic Formula by aphillips on 2002-01-08 19:49:57 (accepted)

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