A mathematician at Carnegie Mellon University has developed an easier way to solve quadratic equations. Here's the secret.

A mathematician at Carnegie Mellon University has developed an easier way to solve quadratic equations. Here's the secret.

The quadratic formula learned by generations of math students is difficult to remember, but it can be used to solve quadratic equations where y = 0.

These ancient Mesopotamians solved quadratic equations by literally completing a square. Here is a typical teaching problem of the time: "Add 20 of my length to the area of my square, [to get] 21.