simplifying rational expressions

*To*: mathgroup at smc.vnet.net*Subject*: [mg61096] simplifying rational expressions*From*: krily <kristi_lynn23 at hotmail.com>*Date*: Mon, 10 Oct 2005 02:39:57 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

If someone could be so kind as to show me how to simplify the following: [(t^4-1)(t^2-9)(t-9)^2]/[(t^4-81)(t^2+1)(t+1)^2]

**Follow-Ups**:**Re: simplifying rational expressions***From:*"Matthias Bode" <lvsaba@hotmail.com>