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Feb 18, 2013 at 17:34 history edited Günter Rote CC BY-SA 3.0
added 62 characters in body; Post Made Community Wiki
Feb 18, 2013 at 4:32 vote accept Manfred Weis
Feb 18, 2013 at 4:32 comment added Manfred Weis @Günter: maybe the answer lies in a case study of the linear factors of your degree-2 polynomials.
Feb 17, 2013 at 21:19 history answered Günter Rote CC BY-SA 3.0