Re: Factorizing...
- To: mathgroup at smc.vnet.net
- Subject: [mg74142] Re: [mg74080] Factorizing...
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Mon, 12 Mar 2007 22:07:02 -0500 (EST)
- Reply-to: hanlonr at cox.net
expr=2+Sqrt[5];
expr==Simplify[((1+Sqrt[5])/2)^3]
True
Last[Reduce[{x^3==expr,x>0},x]]^3
(1/8)*(1 + Sqrt[5])^3
Bob Hanlon
---- Bruno Campanini <BC at gmail.com> wrote:
> How can I get it from Mathematica:
>
> Factor[2+SQR(5)] = ((1+SQR(5))/2)^3
>
> ???
>
> Bruno