Quadratic Substitution

 teachMathematics: Quadratic Substitution

Unless you have scientific or engineering parents you may never have seen Quadratic equations outside of the mathematics classroom. Even if you have seen them, you may have struggled to understand why/how/what on earth? such symbols can represent anything “real”! The youtube clip below hopefully provides a first insight into how quadratics (and equations generally) were an amazing invention by the Frenchmen, Descartes,...


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