In this lesson, you will learn that if we rearrange and rewrite the expression on one side of a quadratic equation to be a perfect square (that is, if we complete the square) we can find the solutions of the equation.

When you finish this lesson, you will be able to:

• Explain what it means to "complete the square" and describe how to do it.
• Solve quadratic equations by completing the square and finding square roots.

Here are the activities that will help you reach those goals:

• 9.2.1: Different Forms of Perfect Squares
• 9.2.2: Standard and Factored Forms of Perfect Squares
  • 9.2.2: Self Check
  • 9.2.2: Additional Resources
• 9.2.3: Completing the Square
  • 9.2.3: Self Check
  • 9.2.3: Additional Resources
• 9.2.4: Making a Perfect Square

After that, you'll practice and review.

• 9.2.5: Practice
• 9.2.6: Lesson Summary