Well, since the two aren't equivilent anyways :) it won't matter. You need to develop a CAS for the 83 plus if you want to do symboic manipulation like that. > >What if Str1=(x-2)^2 and Str2=2x^2-4x+4? > > > >caffeine43@netzero.net on 06/04/2001 > > > > > > > > > > _____________________________________________ > Free email with personality! Over 200 domains! > http://www.MyOwnEmail.com > > > > > >