Quadratic Formula
By Salman Khan - Khan Academy
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1,195
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Lecture Description
Deriving the quadratic formula by completing the square.
Course Description
Topics covered from very basic algebra all the way through algebra II. This is the best algebra playlist to start at if you've never seen algebra before. Once you get your feet wet, you may want to try some of the videos in the "Algebra I Worked Examples" playlist.
Course Index
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