## Solve quadratic equations using the formula

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Deriving and Using the Quadratic Formula

This lesson covers deriving the quadratic formula and using it to solve any quadratic equation.
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This concept explores the derivation of the quadratic formula and how to use the quadratic formula to solve quadratic equations.
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How to use the quadratic formula, as explained by James Sousa.
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