Quadratic equations, Discriminant and Number of solutions
Quadratic expressions and equations
Essential Mathematics Year 10
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Welcome to the world of Quadratic Equations and the Quadratic Formula. In a previous video we looked at how the formula could be used to find the solutions to a whole range of problems. But it has a much more powerful use. Well, the part under the square root! The discriminant is an awesome way to find the number of solutions to a quadratic equation. We can use it to find if there are one, two or no solutions. It's also helpful when trying to find the axis of symmetry! So much fun in such a short lesson.

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quadratic equations quadratic equations by quadratic formula discriminant and quadratic formula discriminant of a quadratic equation discriminant analysis discriminant formula discriminant and nature of roots number of solutions to equations number of solutions of quadratic equations axis of symmetry axis of symmetry of a parabola axis of symmetry equation