 # How to solve a quadratic equation by completing the square?

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Videos, activities and worksheets that are suitable for A Level Maths.

How to solve a quadratic equation by completing the square - tutorial 1
In this tutorial you are shown how to solve a quadratic equation that does not factorise easily by the method of completing the square.
Completing the Square : Tutorial 1 : ExamSolutions
This is a short tutorial taken from our many maths tutorials on completing the square.

Completing the Square - Tutorial 2 : ExamSolutions
This tutorial runs through completing the square for a quadratic expression where the coefficient of x squared is greater than 1.
The example given is 2x2 - x - 1
Completing the Square - Tutorial 3 : ExamSolutions
Completing the square - Tutorial 4 : ExamSolutions
In this 2nd example you are shown how to complete the square for a -2x squared term.

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