The expression "x^4 + x^3 - 2x +5" is not evenly divided by 'x-1', hence the problem is perfectly suited to Algebrator's Polynomial Wizard titled "Long division". 

To help you clearly understand our desktop software and how appropriate it may be for your needs, please use one of the following links to obtain a free trial of the program:

Windows: http://www.softmath.com/tr/alg51win-tr-en.exe

Mac: http://www.softmath.com/tr/alg51mac-tr-en.dmg