Quadratic Formula
Sources
Embracing Mathematics, Assessment & Technology in High Schools; A Michigan Mathematics & Science Partnership Grant Project
Holt, Rinehart & Winston, "Quadratic Equations and Functions." http://my.hrw.com/math06_07/nsmedia/homework_help/alg1/alg1_ch09_09_homeworkhelp.html (accessed 8/18/2010).
Holt, Rinehart & Winston, "Quadratic Functions with Complex Zeros." http://my.hrw.com/math06_07/nsmedia/lesson_videos/alg2/player.html?contentSrc=7109/7109.xml (accessed 8/18/2010).
Holt, Rinehart & Winston, "Using the Quadratic Formula." http://my.hrw.com/math06_07/nsmedia/lesson_videos/alg1/player.html?contentSrc=6379/6379.xml (accessed 8/18/2010).
Holt, Rinehart & Winston, "Solving Using Different Methods." http://my.hrw.com/math06_07/nsmedia/lesson_videos/alg1/player.html?contentSrc=7960/7960.xml (accessed 8/18/2010).
Hot Math, "Quadratic Formula." http://hotmath.com/help/gt/genericalg1/ section_10_3.html (accessed 07/16/2010).
SOSMathematics, "Quadratic Equation: Quadratic Formula." http://www.sosmath.com/algebra/quadraticeq/quadraformula/quadraformula.html (accessed 07/24/2010).