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More Lessons for Grade 9 Math, Math Worksheets

Videos, worksheets, solutions, and activities to help Algebra and Grade 9 students learn about solving quadratic equations by completing the square.

Completing The Square

How to complete the square of a quadratic equation where the coefficient of x squared is equal to one or greater than one?

1. Write the quadratic in the form

ax^{2} + bx + ____ = c + ____

2. If a ≠ 1, divide both sides of the equations by a

3. Add (b/2)^{2} to both sides of the equation

4. Factor the left side of the equation. It should be a perfect square trinomial. Write it as a binomial squared.

5. Square root both sides of the equation and solve for x.
Completing The Square - Algebra Help

Students learn to solve quadratic equations by completing the square.

Completing the Square - Solving Quadratic Equations.

This video shows a slightly harder example of completing the square to solve a quadratic equation.
Advanced Completing the Square

Students learn to solve advanced quadratic equations by completing the square. Note that the quadratic equations in this lesson have a coefficient on the squared term, so the first step is to get rid of the coefficient on the squared term by dividing both sides of the equation by this coefficient.

You can use the Mathway widget below to practice Algebra or other math topics. Try the given examples, or type in your own problem. Then click "Answer" to check your answer.

More Lessons for Grade 9 Math, Math Worksheets

Videos, worksheets, solutions, and activities to help Algebra and Grade 9 students learn about solving quadratic equations by completing the square.

Completing The Square

How to complete the square of a quadratic equation where the coefficient of x squared is equal to one or greater than one?

1. Write the quadratic in the form

ax

2. If a ≠ 1, divide both sides of the equations by a

3. Add (b/2)

4. Factor the left side of the equation. It should be a perfect square trinomial. Write it as a binomial squared.

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

Students learn to solve quadratic equations by completing the square.

This video shows a slightly harder example of completing the square to solve a quadratic equation.

Students learn to solve advanced quadratic equations by completing the square. Note that the quadratic equations in this lesson have a coefficient on the squared term, so the first step is to get rid of the coefficient on the squared term by dividing both sides of the equation by this coefficient.

You can use the Mathway widget below to practice Algebra or other math topics. Try the given examples, or type in your own problem. Then click "Answer" to check your answer.

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