When the discriminant is negative, the roots of the quadratic equation are complex, meaning that they're complex numbers that include the imaginary number i. Today we're going to talk about how to use the quadratic formula to solve for the roots of a quadratic function.The discriminant is defined as: b2 4ac. • If b2 – 4ac > 0, there are two solutions. This worksheet drills the understanding of finding the discriminant, determining number and type of roots, and solving with the quadratic formula. The discriminate formula is b squared minus four ac for quadratic equation in standard form ax squared plus bx plus c. These notes also go over finding the number of solutions to quadratic equations using the discriminant. Algebra 9-6: The Quadratic Formula and the Discriminant. Moreover, the discriminant tells how many solutions to the equation there are as well as if the solutions are real or imaginary. Watch me factor this shit.