It is just a formula you can fill in that gives you roots. The root of a quadratic equation Ax 2 Bx C 0 is the value of x which solves the equation. And then plug them in.
The standard form of a quadratic equation is.
How to write down a quadratic equation using its given solutions. There could be multiple real values or none of x which satisfy the equation. The roots of the quadratic equations are first -b b2-4ac 2a second -b - b2-4ac 2a. Enter quadratic equation in the format ax2bxc.