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:

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]
>
>

```

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