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Khan Academy
Khan Academy: Difference of Squares
Factor quadratic expressions of the general difference of squares form. The factored expressions have the general form (ax+b)(ax-b). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video...
Khan Academy
Khan Academy: Difference of Squares Intro
Factor quadratic expressions into the special products of the general form (x+a)(x-a). Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Difference of Squares
Factor quadratic expressions of the general difference of squares form: (ax)^2-b^2. The factored expressions have the general form (ax+b)(ax-b).
CK-12 Foundation
Ck 12: Algebra: Factorization Using Difference of Squares
[Free Registration/Login may be required to access all resource tools.] Factor the difference of two squares and perfect square trinomials and solve quadratic polynomial equations by factoring.
CK-12 Foundation
Ck 12: Algebra: Factorization Using Difference of Squares
[Free Registration/Login may be required to access all resource tools.] Factor the difference of two squares and perfect square trinomials and solve quadratic polynomial equations by factoring.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Difference of Squares
Find a quick, concise explanation of how to find the difference of squares. An example is given and clearly explained.
Interactive Mathematics
Interactive Mathematics: Common Factor & Difference of Squares
These easy to follow examples demonstrate how to factor algebraic expression using GCF and difference of squares.
Khan Academy
Khan Academy: Multiply Difference of Squares
Multiply differences of squares similar to the form (x+a)(x-a).
University of Saskatchewan (Canada)
University of Saskatchewan: Factoring Polynomials
This site from the University of Saskatchewan provides an explanation of factoring by grouping, greatest common factor, perfect squares, and difference of squares. Higher degree polynomials factored as well. Some examples provided along...
Khan Academy
Khan Academy: Difference of Squares Intro
Factor quadratic expressions into the special products of the general form (x+a)(x-a).
Other
Karl's Calculus Tutor: The Difference of Squares
This site provides a general overview of the special case of factoring known as the difference of squares. This procedure highlights rationalizing the denominator.
Purple Math
Purplemath: Special Factoring: Differences of Squares
Demonstrates how to use the formula for finding the differences of squares, and warns against trying to factor a sum of squares.
Cool Math
Coolmath: Difference of Two Squares, Sum and Difference of Two Cubes
This algebra lesson explains how to factor the difference of two squares and the sum and difference of two cubes.
Lawrence Hall of Science
The Math Page: Skill in Algebra: The Difference of Two Squares
Here is a site that clearly and thoroughly explains factoring and multiplying a difference of two squares. There are example problems solved, problems for the student to attempt, and answers to the student problems. A set of cumulative...
Math Medics
S.o.s. Math: Factoring: Some Special Cases
In this lesson, special cases of factoring are described, including perfect squares, difference of squares, and difference and sum of cubes. Exercises with answers included.
Oswego City School District
Regents Exam Prep Center: Factoring the Difference of Two Perfect Squares
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.
Mangahigh
Mangahigh: Algebra: Factor Using the Difference of Two Squares
Students watch an online tutorial on the concept of factoring using the difference of two squares . After watching, students test their knowledge by attempting ten practice problems that increase or decrease in difficulty based on their...
Mangahigh
Mangahigh: Algebra: Factor Using the Difference of Two Squares
Students watch an online tutorial on the concept of factoring trinomials using the difference of two squares. After watching, students test their knowledge by attempting ten practice problems that increase or decrease in difficulty based...
Khan Academy
Khan Academy: Special Products of Binomials
Find special products (perfect squares and difference of squares) of "advanced" binomials: binomials with leading coefficients other than 1; binomials with higher degrees; and binomials with two variables. Students receive immediate...
Sophia Learning
Sophia: Using the Difference of Two Squares to Solve Equations: Lesson 2
This lesson demonstrates how to use the difference of two squares and the zero product property to solve for binomial equations. It is 2 of 4 in the series titled "Using the Difference of Two Squares to Solve Equations."
Sophia Learning
Sophia: Using the Difference of Two Squares to Solve Equations: Lesson 4
This lesson demonstrates how to use the difference of two squares and the zero product property to solve for binomial equations. It is 4 of 4 in the series titled "Using the Difference of Two Squares to Solve Equations."
Wyzant
Wyzant: Factoring a Difference Between Two Squares Lessons
Several examples are presented to demonstrate how to factor a polynomial that is a difference of two squares. The online worksheet helps for extra practice.
CK-12 Foundation
Ck 12: Algebra: Factorization Using Perfect Square Trinomials
[Free Registration/Login may be required to access all resource tools.] Factor perfect square trinomials and the difference of two squares and solve quadratic equations by factoring.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Special Cases(squares, Product of Sum and Difference)
Twenty-nine problems present a variety of problems working with polynomial special cases. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution"...