Quadratic Formula Practice

In the sketch below, drag sliders a, b and c to change the quadratic equation. Be certain the graph crosses the x-axis.

Use the Quadratic Formula to solve for the roots/zeros of f(x).

Check your answers by clicking on the check box.
Get a hint if you need one!

Repeat this until you get 10 correct!

Sorry, the GeoGebra Applet could not be started. Please make sure that Java 1.4.2 (or later) is installed and active in your browser (Click here to install Java now)

Steve Phelps, Created with GeoGebra