Simplifying radicals

*To*: mathgroup at smc.vnet.net*Subject*: [mg122203] Simplifying radicals*From*: Tom De Vries <tidetabletom at gmail.com>*Date*: Thu, 20 Oct 2011 07:44:43 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com

Hi, I'm working with some introductory topics in radicals. I know that Mathematica assumes things about the domain used in problems, so the principal cube root of a negative number will be complex... or something like that.. I'm way down at the lower high school level simply working with cube roots of negative numbers and wanting a negative number result. I know there are ways of using assumptions and solving over the reals, etc. Is there any EASY way I can simply ask for the cube root of -729 and get -9? TOM

**Follow-Ups**:**Re: Simplifying radicals***From:*Syd Geraghty <sydgeraghty@me.com>