Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2xb/ Esercizi: http://www.khanacademy.org/exercises?exid=exponent_rules Traduzione in Italiano del video Exponent Rules Part 2 http://www.youtube.com/watch?v=rEtuPhl6930 http://www.khanacademy.org/video/exponent-rules-part-2?playlist=Pre-algebra Help us caption & translate this video! http://amara.org/v/B2xb/