Simplyfying expression

*To*: mathgroup at smc.vnet.net*Subject*: [mg30624] Simplyfying expression*From*: Shusaku Yamamoto <shusaku.yamamoto at buseco.monash.edu.au>*Date*: Fri, 31 Aug 2001 04:09:48 -0400 (EDT)*Organization*: Monash University*Sender*: owner-wri-mathgroup at wolfram.com

Hello, thank you very much for helping my previous problem. I have another problem. I tried simplifying the solutions of a simultaneous difference equations; i.e. I typed Simplify[-1-5*(3^x)+(31/63)*(2^(2+x))*(5^(1+x))-((53*(10^x))/63)] Simplify[-1-5*(3^x)+(31/63)*(2^(2+x))*(5^(1+x))-((53*(10^x))/63),x "set of" Reals] FullSimplify[-1-5*(3^x)+(31/63)*(2^(2+x))*(5^(1+x))-((53*(10^x))/63)] Yet, Mathematica does not simplify the expressions. I know the above expression can be written as: -1-5*(3^x)+9(10^x). If you know how to simplify the above expression, could you let me know? Thank you very much in advance.