Jöran Friberg, Geometric division problems, quadratic equations, and recursive geometric algorithms in Mesopotamian mathematics, Archive for History of Exact Sciences, Vol. 68, No. 1 (January 2014), ...

Jørgen Cherly, Luis Gallardo, Leonid Vaserstein, Ethel Wheland, SOLVING QUADRATIC EQUATIONS OVER POLYNOMIAL RINGS OF CHARACTERISTIC TWO, Publicacions Matemàtiques, Vol. 42, No. 1 (1998), pp. 131-142 ...

Before students are presented with the quadratic formula, they’re taught a simpler method to solve certain equations. For simplicity, we’ll consider an equation where a = 1. x² – 4x – 5 = 0 ...