## The Quadratic Formula

The quadratic formula can be used to solve every quadratic equation. It is very useful for solving quadratic equations that cannot be easily factored.

### Does the quadratic formula provide more than two solutions?

The quadratic formula provides the solutions to a quadratic equation. These solutions are the x-values where the graph crosses the x-axis. A parabola can only cross the x-axis 0,1, or 2 times. Therefore, the quadratic formula can only provide 0,1, or 2 solutions.

### What information is needed in order to use the quadratic formula to solve a quadratic equation ?

In order to use the quadratic formula, the following information is needed.

The quadratic equation should be written in standard form.

The values of a, b and c, with aâ‰ 0, needs to be identified.

How to Use the Quadratic Formula

Watch the video below which demonstrates how to use the quadratic formula.

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