Why Does (a - b)^2 = a^2 - 2ab + b^2 ?
2:55
YouTubeMr. Sal
Why Does (a - b)^2 = a^2 - 2ab + b^2 ?
Subscribe for new videos: https://www.youtube.com/c/MrSalMath Share this video: https://youtu.be/Js6b7yMLIA4 Follow me on Facebook: https://goo.gl/gnnhRj The problem: Why does (a - b)^2 = a^2 - 2ab + b^2 ?
24.2K viewsAug 3, 2017
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