Sal Khan, CK-12 Foundation
Exploring a world where both sides aren't equal anymore! Conceptual videos and worked examples from basic algebra through algebra 2. Includes videos from the former algebra worked examples playlists. Source: Khan Academy (www.khanacademy.org), used under the Creative Commons Attribution-NonCommercial-ShareAlike (CC BY-NC-SA) license. All Khan Academy content is available for free at www.khanacademy.org. Khan Academy does not endorse the World Public Library.
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