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Proof of Quadratic Formula

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Examples, solutions, videos, worksheets, games, and activities to help Algebra students learn about how to derive the quadratic formula by completing the square.

The following diagram shows the Proof for the Quadratic Formula. Scroll down the page for more examples and solutions of how to proof or derive the quadratic formula.
Quadratic Formula Proof

Proof of Quadratic Formula
Deriving the quadratic formula by completing the square. Deriving the Quadratic Formula

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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