What Is The Value Of The Discriminant For The Quadratic Equation 0 = X + 2 + X2? Discriminant = B2 – 4Ac. In other words, the parabola touches the x. When the discriminant is zero, the quadratic equation has exactly one real root or two real roots that are the same (also known as repeated roots).

Learn how to calculate the discriminant of a quadratic or cubic equation and what it tells us about the number of solutions. It helps determine the nature of the roots (solutions) of the quadratic. The discriminant is a value derived from the coefficients of a quadratic equation in the form ax2 + bx + c = 0.