More Lessons for Grade 6

Math Worksheets

Videos to help GCSE Maths students learn how to complete the square in order to solve quadratic equations.

1. Write the quadratic in the form

ax

2. If a ≠ 1, divide both sides by a.

3. Add \({\left( {\frac{b}{2}} \right)^2}\) to both sides of the equation.

3. Factor the left side of the equation. It should be a perfect square.

4. Square root both sides of the equation and solve for x.

GCSE Maths - Quadratic Equations 6 (Completing the Square) Higher Mathematics (IGCSE)

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 2x

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