Help us caption and translate this video on Amara.org: http://www.amara.org/en/v/B2wi/ Traduzione in Italiano del video Quadratic Inequalities http://www.youtube.com/watch?v=ZNtzWpU80-0 http://www.khanacademy.org/video/quadratic-inequalities?playlist=Algebra Help us caption & translate this video! http://amara.org/v/B2wi/