Re: eliminate x
- To: mathgroup at smc.vnet.net
- Subject: [mg98251] Re: eliminate x
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Fri, 3 Apr 2009 04:39:43 -0500 (EST)
- Organization: Uni Leipzig
- References: <gr0gl4$966$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
Hi,
x == (y /. Solve[x*x + x + 5 + 8*x*x*x == 0 /. a_ + x :> a + y,
y][[1]])
??
Regards
Jens
magdamoczydlowska at gmail.com wrote:
> Dear All,
>
> I have simple equation x*x+x+5+8*x*x*x=0 and I would like to eliminate
> from this equation x but in this way to recaive x=- x*x-8*x*x*x-5. So
> the x with the lowest power is always on tle left site.
>
> Best regards and thank you for help,
> Magdalena
>