Use this site to learn the trick to factoring when the polynomial is a difference of two perfect squares. The site contains examples that are easy to follow.

Explore the world of square roots in this mini-lesson. Provides a definition and different methods for finding the square root of a number. Includes solved examples and practice questions with answers.

Discussion on trinomial squares. Includes examples as well as practice problems.

[Free Registration/Login may be required to access all resource tools.] Learn how to complete the square in order to solve quadratic equations.

Briefly covers the topics of square roots, decimal numbers, and perfect squares.

Practice finding the approximate value of square roots by thinking about perfect squares.

This WebMath site includes an interactive problem solver. Use it to factor a polynomial that is the difference between two perfect squares. The website will bring back a full explanation behind the answer.

This comprehensive study guide highlights the main terms and formulas needed to review irrational numbers and radicals. Examples are included.