You watch Loh explain it himself in the video, below. Suppose you have a standard quadratic equation for whatever reason that looks like this: x 2 -6x+3=0 In this case, A=1, B=-6, and C=3.

Many former algebra students have painful memories of struggling to memorize the quadratic formula. A new way to derive it, overlooked for 4,000 years, is so simple it eliminates the need.

Kimbrell, a math teacher at Chesnee High School, inspired her students to put together a rap song about the quadratic formula. The video, posted during Teacher Appreciation Week, is getting a lot ...