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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).
Other
Sierra College: Elementary Algebra Review Sheet and Common Formulas
This review sheet includes important rules, properties, formulas, and equations needed to solve many Algebra problems.
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Polynomial and Rational Functions
Hotmath provides 20 practice problems that relate to polynomial and rational functions. Each of the practice problems include a step-by-step guide for solving.
National Council of Teachers of Mathematics
Nctm: Illuminations: Algebra Tiles
This resource is about factoring linear and quadratic expressions in one variable, evaluating them at a given value of the variable, multiplying factors to find the expanded form of the expression, and solving linear and quadratic...
CK-12 Foundation
Ck 12: Algebra: Factoring by Grouping
[Free Registration/Login may be required to access all resource tools.] Group terms in quadratic expressions to help completely factor them.
CK-12 Foundation
Ck 12: Algebra: Factoring by Grouping
[Free Registration/Login may be required to access all resource tools.] Group terms in quadratic expressions to help completely factor them.
Purple Math
Purplemath: Algebra Resources
Purplemath contains about 40 different lessons on various algebra topics. The lessons are divided into five different sections: preliminary topics, beginning algebra, intermediate algebra, advanced algebra, and word problems. The lessons...
Discovery Education
Discovery Education: Web Math: Algebra
This WebMath site provides links to tutorials and lessons in both Algebra I and II. Links to topics such as factoring, solving equations, polynomials, simplifying equations, graphing, and much more.
Other
University of Wisconsin: Basic Algebra
This college site offers a variety of problems and answers. Problems are divided into topic areas for easy access. Also offers quizzes with each topic.
CK-12 Foundation
Ck 12: Algebra: Factoring When the Leading Coefficient Equals 1
[Free Registration/Login may be required to access all resource tools.] This lesson covers factoring quadratics when the leading coefficient is 1.
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.
ClassFlow
Class Flow: Factoring Trinomials
[Free Registration/Login Required] In this flipchart students are led on a discovery of the patterns found in factoring trinomials. They apply the patterns to factor.
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.
Other
Interactive Algebra: Factoring With Negatives
These randomly generated polynomials allow you practice factoring. Some of the polynomials contain leading coefficients that are negative. Hints are available when needed and, when ready, you can check your answer.
Purple Math
Purplemath: Factoring Polynomials: How To
Demonstrates the steps involved in factoring a general polynomial, including using the Rational Roots Test and synthetic division. Shows how to "cheat" with a graphing calculator.
Purple Math
Purplemath: Solving Polynomials: How To
Demonstrates the steps involved in solving a general polynomial, including how to use the Rational Roots Test and synthetic division. Points out when using a graphing calculator can be very helpful.
Other
Brown Math: Solving Polynomial Equations
The many facets of factoring polynomials and solving polynomial equations are explained here in great detail. Taking students from basic definitions through the Descartes Rule of Signs, this is a valuable tool for math classes.
Paul Dawkins
Paul's Online Notes: Algebra: Partial Fractions
Detailed math tutorial features notes and examples that take a look at the process of partial fractions and finding the partial fraction decomposition of a rational expression.
Math Medics
S.o.s. Math: The "Cubic" Formula
This tutorial supplies a general formula (similar to the quadratic formula) to find the roots of a cubic polynomial.
Paul Dawkins
Paul's Online Notes: Factoring Polynomials: Practice Problems
Practice exercise reviews factoring polynomials including how to factor out the greatest common factor, factoring by grouping, factoring quadratics, and factoring polynomials with degree greater than 2.
Other
University of Edinburgh: Glossary of Introductory Computer Graphics Terms
This website, from the University of Edinburgh, provides a lengthy glossary of computer graphics terms written by Olin Lathrop, author of "The Way Computer Graphics Work". This site provides simple definitions of basic terms; no graphics...
Curated OER
S.o.s. Math: Fundamental Theorem of Algebra
This lesson takes a look at the fundamental theorem of algebra. It gives information on solving multiplicity of roots and quadratic polynomials. Also gives a brief history and provides some learning exercises to practice.
Curated OER
S.o.s. Math: Fundamental Theorem of Algebra
This lesson takes a look at the fundamental theorem of algebra. It gives information on solving multiplicity of roots and quadratic polynomials. Also gives a brief history and provides some learning exercises to practice.
Curated OER
S.o.s. Math: Fundamental Theorem of Algebra
This lesson takes a look at the fundamental theorem of algebra. It gives information on solving multiplicity of roots and quadratic polynomials. Also gives a brief history and provides some learning exercises to practice.