Completing the Square and the Quadratic Formula | Revision for Maths GCSE and iGCSE

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PhET Interactive Simulations
University of Colorado Boulder

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[Primrose_Kitten]

Easy questions Completing the square at 00:36 Medium Completing the square in surd format at 22:56 Hard using the quadratic formula at 35:39 You can try all the questions at the beginning of the video and then watch the explanation to check if you have the correct answer. Try a few at each level and you can jump ahead or go back to other questions. The first question of each section has some added explanation to help you with the problems.
GCSE 9-1 Maths Grade 7, 8, 9 Booster Revision

[mediocregamereviewer]

So happy you made this!! Struggled with this for a while at school.

[chiaralanuti]

Can you use the quadratic formula to solve the easy and medium questions?

[indigopillow]

Why does it always equal 0 I understand everything else but not that part