Complete the Square to Solve Quadratic Equations
More Lessons for GCSE Maths
Videos and solutions to help GCSE Maths students learn how to complete the square in order to solve quadratic equations.
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 - negative x squared type (example 1)
In this tutorial you are shown how to complete the square for a negative x squared term.
Completing the square for a negative x squared term (Example 2)
In this 2nd example you are shown how to complete the square for a -2x squared term.
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 widget 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.