3.3 (OPTIONAL) The CUBIC formula, the QUARTIC formula, and BEYOND!
Things get complicated! (There are reasons why we don’t teach these formulas in school.) And mathematical history of finding these fomulas is full of twists and turns and surprises – and human betrayal!
See the COMPANION GUIDE to this QUADRATICS course for an essay giving the story of these formulas, their mathematics and their history.
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