How Do You Use The Discriminant to Determine the Number of Solutions of a Quadratic Equation?

What is the discriminant? The what? The discriminant? It has something to do with quadratic equations. It's used to determine how many answers a quadratic equation has, but what is it? It's an equation that is actually a part of the quadratic formula. So after plugging values into the formula and solving it can be determined how many answers the equation has. Want to know how? Watch this video.