If you want to dived polynomials, we are suggesting that you use our app 'Algebrator': 

You can download free trial for 'Algebrator' via the following links:

Windows: http://www.softmath.com/tr/alg51win-tr-en.exe
Mac: http://www.softmath.com/tr/alg51mac-tr-en.dmg

Please let us know if you have any questions.