Solving Quadratic Equations by Completing the Square

The following diagram shows how to use the Completing the Square method to solve quadratic equations. Scroll down the page for more examples and solutions of solving quadratic equations using completing the square.

Printable & Online Algebra Worksheets

Completing the Square - Solving Quadratic Equations

Examples:

1. x² + 6x - 7 = 0
2. 2x² - 10x - 3 = 0
3. -x² - 6x + 7 = 0

• Show Video Lesson

Quadratic Equations - Completing the Square

Examples:

1. x² + 12x - 31 = 0
2. x² - 8x + 10 = 0
3. 2x² - 10x + 8 = 0
4. 3x² - 8x + 5 = 0

• Show Video Lesson

Solving a quadratic by completing the square

Try out our new and fun Fraction Concoction Game.

Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.

We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.