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MathGroup Archive 2004

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Re: Expanding a Square Root

  • To: mathgroup at smc.vnet.net
  • Subject: [mg50827] Re: Expanding a Square Root
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Wed, 22 Sep 2004 04:52:05 -0400 (EDT)
  • Organization: Universitaet Leipzig
  • References: <ciqvh5$ilb$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,

Sqrt[3799 + 792*Sqrt[23]] // FullSimplify

???

Regards
  Jens

Jim Dars wrote:
> 
> Hi All,
> 
> I should point out that I use Mathematica 4.0 infrequently, thus I may be
> missing the obvious.  My problem is as follows:
> 
> In the following I use the square root sign from the palette for SQRT
> Expand[(44+9*SQRT(23))^2]  yields
> 3799 + 792*SQRT(23)
> 
> I now wish to take the square root of  3799 + 792*SQRT(23) to return to my
> original expression.  However
> 
> Expand[SQRT(3799 + 792*SQRT(23))] merely yields
> 
> [SQRT(3799 + 792*SQRT(23))]
> 
> What is the proper command to make SQRT(3799 + 792*SQRT(23)) yield
> 44+9*SQRT(23)
> 
> Best wishes, Jim


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