If I told you a certain polynomial P(x) had a double root (only one!), how could you go about finding it, WITHOUT trying to find every root? Also, the EXACT value of the root is sought; not an approximation.

NB. Roots may be any kind --real or complex-- but they are all different, with multiplicity "1", except for one that has multiplicity "2".

(In reply to re: A most general solution by Richard)

Of course itīs GCD; I donīt know how I typed GCM; thanks!

Posted by e.g. on 2006-05-09 08:18:31