On the NYT home page, this is currently the #3 viewed story, after the Iowa caucus and the coronavirus.http://nytimes.com/2020/02/05/science/quadratic-equations-algebra.html …
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Iowa, coronavirus and quadratics are all math. One of them at least has a tidy solution.
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This method is not new in modern times. The basic mo trick (the step r * s = -5 w (2-u) * (2+u) = -5 in one of my speed math books on how to quickly do math in your head (now I am going to have to find the book just a sec)pic.twitter.com/ytJ7ZAHK0a
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