The Quadratic Formula
On this page you will find videos on the quadratic formula and how to use it to solve quadratic equations.
\[x=\frac{b\pm\sqrt{b^24ac}}{2a}\]

This video introduces the quadratic formula which gives us a way to solve any quadratic equation.


This video looks at how we can use the quadratic formula to find the exact solution to quadratic equations using our knowledge of surds.


This video looks at quadratic equations that have no solutions, and how we can identify them.

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