Re: simplifying rational expressions

*To*: mathgroup at smc.vnet.net*Subject*: [mg61109] Re: [mg61096] simplifying rational expressions*From*: "Matthias Bode" <lvsaba at hotmail.com>*Date*: Tue, 11 Oct 2005 03:20:03 -0400 (EDT)*References*: <200510100639.CAA26857@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hello Kristi: Of course - please try: INPUT: Simplify[((t^4 - 1)*(t^2 - 9)*(t - 9)^2)/ ((t^4 - 81)*(t^2 + 1)*(t + 1)^2)] OUTPUT: ((-9 + t)^2*(-1 + t))/((1 + t)*(9 + t^2)) INPUT: FullSimplify[((t^4 - 1)*(t^2 - 9)* (t - 9)^2)/((t^4 - 81)*(t^2 + 1)* (t + 1)^2)] OUTPUT: 1 - 20/(1 + t) + 90/(9 + t^2) Best regards, MATTHIAS BODE Torres Sofer III, depto. 9 A Pedro Borda #1072 esq. Ismael Vásquez COCHABAMBA/BOLIVIA CEL: +591-70 71 56 64 TEL/FAX: +591-4-4 53 34 17 LVSABA at HOTMAIL.COM Time indicated: UTC (=GMT). ----- Original Message ----- From: "krily" <kristi_lynn23 at hotmail.com> To: mathgroup at smc.vnet.net Subject: [mg61109] [mg61096] simplifying rational expressions > 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] > >

**References**:**simplifying rational expressions***From:*krily <kristi_lynn23@hotmail.com>