Factoring polynomials over the reals

*To*: mathgroup at yoda.physics.unc.edu*Subject*: Factoring polynomials over the reals*From*: JWENDEL at isdmnl.wr.usgs.gov*Date*: Thu, 18 Mar 1993 11:36:33 -0800 (PST)

I believe that NSolve is the only way to go. Consider so simple an example as x^5-4x+2=0. This has no "elementary" solutions, i.e. rational or expressible through radicals and thus I think there can't be a method to produce the desired factorization.