The Quadratic Formula
On this page you will find videos on the quadratic formula and how to use it to solve quadratic equations.
\[x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}\]
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This video introduces the quadratic formula which gives us a way to solve any quadratic equation.
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This video looks at how we can use the quadratic formula to find the exact solution to quadratic equations using our knowledge of surds.
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This video looks at quadratic equations that have no solutions, and how we can identify them.
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