When b2 - 4ac 0 there are two real roots. Quadratic Formula-b - Square root of b squared - 4ac Divided by 2a. As we have seen there can be 0 1 or 2 solutions to a quadratic equation depending on whether the expression inside the square root sign b 2 - 4ac is positive negative or zero.
The Quadratic Formula latex xfrac-bpm sqrtb2-4ac2alatex is found by completing the square of the quadratic equation latex latex.
Quadratic Formula-b - Square root of b squared - 4ac Divided by 2a. Positive there are 2 real solutions. Use the quadratic formula to find the roots of x 2 -5x6 0. Quadratic Equation in Standard Form.