Unit Plan
Khan Academy

Khan Academy: Difference of Squares

For Students 9th - 10th Standards
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...
Unit Plan
Khan Academy

Khan Academy: Difference of Squares Intro

For Students 9th - 10th
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.
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Khan Academy

Khan Academy: Difference of Squares

For Students 9th - 10th Standards
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).
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Factorization Using Difference of Squares

For Students 9th - 10th
[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.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Factorization Using Difference of Squares

For Students 9th - 10th
[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.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Algebra Review: Difference of Squares

For Students 9th - 10th
Find a quick, concise explanation of how to find the difference of squares. An example is given and clearly explained.
Activity
Interactive Mathematics

Interactive Mathematics: Common Factor & Difference of Squares

For Students 9th - 10th
These easy to follow examples demonstrate how to factor algebraic expression using GCF and difference of squares.
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Khan Academy

Khan Academy: Multiply Difference of Squares

For Students 9th - 10th
Multiply differences of squares similar to the form (x+a)(x-a).
Activity
University of Saskatchewan (Canada)

University of Saskatchewan: Factoring Polynomials

For Students 9th - 10th
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...
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Khan Academy

Khan Academy: Difference of Squares Intro

For Students 9th - 10th
Factor quadratic expressions into the special products of the general form (x+a)(x-a).
Handout
Other

Karl's Calculus Tutor: The Difference of Squares

For Students 9th - 10th
This site provides a general overview of the special case of factoring known as the difference of squares. This procedure highlights rationalizing the denominator.
Handout
Purple Math

Purplemath: Special Factoring: Differences of Squares

For Students 9th - 10th Standards
Demonstrates how to use the formula for finding the differences of squares, and warns against trying to factor a sum of squares.
Activity
Cool Math

Coolmath: Difference of Two Squares, Sum and Difference of Two Cubes

For Students 6th - 9th
This algebra lesson explains how to factor the difference of two squares and the sum and difference of two cubes.
Unit Plan
Lawrence Hall of Science

The Math Page: Skill in Algebra: The Difference of Two Squares

For Students 9th - 10th
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...
Activity
Math Medics

S.o.s. Math: Factoring: Some Special Cases

For Students 9th - 10th
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.
Handout
Oswego City School District

Regents Exam Prep Center: Factoring the Difference of Two Perfect Squares

For Students 9th - 10th
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.
Unit Plan
Mangahigh

Mangahigh: Algebra: Factor Using the Difference of Two Squares

For Students 9th - 10th
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...
Unit Plan
Mangahigh

Mangahigh: Algebra: Factor Using the Difference of Two Squares

For Students 9th - 10th
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...
Unit Plan
Khan Academy

Khan Academy: Special Products of Binomials

For Students 9th - 10th
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...
PPT
Sophia Learning

Sophia: Using the Difference of Two Squares to Solve Equations: Lesson 2

For Students 9th - 10th
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."
PPT
Sophia Learning

Sophia: Using the Difference of Two Squares to Solve Equations: Lesson 4

For Students 9th - 10th
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."
Unit Plan
Wyzant

Wyzant: Factoring a Difference Between Two Squares Lessons

For Students 9th - 10th
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.
Unit Plan
CK-12 Foundation

Ck 12: Algebra: Factorization Using Perfect Square Trinomials

For Students 9th - 10th Standards
[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.
Activity
Varsity Tutors

Varsity Tutors: Hotmath: Practice Problems: Special Cases(squares, Product of Sum and Difference)

For Students 9th - 10th
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"...

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