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Lesson on solving quadratic equations using the quadratic formula -- and a song to remember it by.

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1. 1. 10.6 Solve Quadratic Equations using the ♫ Quadratic Formula ♫ Goal: to learn the quadratic formula, and solve equations using it.
2. 2. We've solved quadratic equations by factoring --
3. 3. We've solved quadratic equations using square roots--
4. 4. We've graphed quadratic equations and identified the solutions on the graph. How many solutions are shown on each graph? y x y x y x
5. 5. Try solving: What do we do when a quadratic equation doesn’t factor and it can’t be solved using square roots?
6. 6. We SING!! … the quadratic formula song. ♫
7. 7. The quadratic formula can be used to solve ANY quadratic equation that’s written in standard form: