Re: a simplification problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg55263] Re: [mg55172] a simplification problem*From*: yehuda ben-shimol <bsyehuda at gmail.com>*Date*: Thu, 17 Mar 2005 03:31:32 -0500 (EST)*References*: <200503161035.FAA23728@smc.vnet.net>*Reply-to*: yehuda ben-shimol <bsyehuda at gmail.com>*Sender*: owner-wri-mathgroup at wolfram.com

If you look carefully x==(-1)^(1/3) then Solve[x^3==-1,x] gives the following results {{x -> -1}, {x -> (-1)^(1/3)}, {x -> -(-1)^(2/3)}} So x=(-1) is not the only solution. yehuda On Wed, 16 Mar 2005 05:35:49 -0500 (EST), Hui Fang <fangh73 at xmu.edu.cn> wrote: > Dear All, > > My questions is simple: > How do I simplify (-1)^(1/3) to -1? > > Thanks! > >

**References**:**a simplification problem***From:*Hui Fang <fangh73@xmu.edu.cn>