AQA · Mathematics · 8300

GCSE Maths: Quadratic formula proof

Algebra · AQA GCSE Maths (8300). Cards are generated from the Corbettmaths textbook exercise for Quadratic formula proof (Corbettmaths Video 267), and every card links back to the exact page it came from. Practice tests generate fresh variations of these questions, so the numbers change every attempt. Source material © Corbettmaths — used with attribution.

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  1. The quadratic formula is x = ?

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    (−b ± √(b² − 4ac)) / 2a

  2. In the quadratic formula, what do the variables a, b, and c represent?

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    They are the coefficients from the standard form of a quadratic equation: ax² + bx + c = 0

  3. In the quadratic formula, the ± symbol means there are ? possible solutions for x

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    two

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