I recently needed to check some homework answers related to use of the quadratic formula. After realizing that it was getting tedious to do these by hand, I thought of using my calculator to solve ...

A mathematician at Carnegie Mellon University has developed an easier way to solve quadratic equations. The mathematician hopes this method will help students avoid memorizing obtuse formulas. His ...

The quadratic formula for a quadratic equation in the form of \(ax^2 + bx + c = 0\) is: \(x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\). The first solution is \(\frac{(-6 ...

Proceedings of the American Mathematical Society, Vol. 130, No. 7 (Jul., 2002), pp. 1913-1922 (10 pages) Let $\Phi \subset \mathbb{Z}^n$ be one of the root systems An-1, Bn, Cn and Dn and write Φ(+) ...