Re: Simplify and Gather Terms in a Polynomial

*To*: mathgroup at smc.vnet.net*Subject*: [mg46445] Re: [mg46434] Simplify and Gather Terms in a Polynomial*From*: Andrzej Kozlowski <akoz at mimuw.edu.pl>*Date*: Thu, 19 Feb 2004 03:01:52 -0500 (EST)*References*: <200402180536.AAA14436@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

On 18 Feb 2004, at 06:36, sabbri wrote: > I have two equivalent polynomial expressions. In the second, which > should derive from the first, terms are gathered respecting to a > particular variable. for example: > y(x+ x^2) > I want to make it gathered for x > x(y+yx) > How can I give this command? > > > Probably the simplest way is: <<Algebra`Horner` Horner[y*(x + x^2), x] x*(x*y + y) You can also do this using PolynomialReduce: x*PolynomialReduce[y*(x + x^2), x][[1,1]] x*(x*y + y) Andrzej Kozlowski Chiba, Japan http://www.mimuw.edu.pl/~akoz/

**References**:**Simplify and Gather Terms in a Polynomial***From:*sabrinacasagrande@hotmail.com (sabbri)