Simplify

*To*: mathgroup at smc.vnet.net*Subject*: [mg14780] Simplify*From*: Jurgen Tischer <jtischer at col2.telecom.com.co>*Date*: Sat, 14 Nov 1998 03:08:09 -0500*Organization*: Universidad del Valle*Sender*: owner-wri-mathgroup at wolfram.com

Could someone tell me please how to simplify the following formula? (-7253*2^(1 + 2*n)*5^n - 523*4^n*5^(1 + n) + 17121*20^n + 130321*20^n*n^4)/130321 To my surprise when I changed by hand (with two rules) the powers of 2, 5 and so on to powers of 20, Mathematica changed them back to this form. Thanks Jurgen