ClassFlow
Class Flow: Quadratics Zeros
[Free Registration/Login Required] Graph parabolas and discover the zeros. Calculate the roots by factoring.
Illustrative Mathematics
Illustrative Mathematics: F if Which Function?
For this task, students are presented with a graph and asked to identify the functions that could be represented by it and explain their thinking. The task addresses knowledge related to interpreting forms of functions derived by...
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.
CK-12 Foundation
Ck 12: Algebra: Factor Polynomials Using Special Products
[Free Registration/Login may be required to access all resource tools.] This lesson covers factoring perfect square trinomials and the difference of squares.
Khan Academy
Khan Academy: Solve Equations Using Structure
Solve advanced equations by strategically using quadratic factorization methods.
Math2
Math2.org: Polynomial Identities
This resource provides a list of polynomial identities, including formulas for squaring a binomial, FOILing a trinomial, factoring a difference of two squares, factoring a sum or difference of two cubes, and the Quadratic Formula.
Windstream
Ojk's Precalculus Study Page: Solving Polynomial Equations
A comprehensive look at the three main ways to find the roots of a polynomial: factoring, formulas, and the rational root theorem.
Khan Academy
Khan Academy: Solve Equations Using Structure
Solve advanced equations by strategically using quadratic factorization methods. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Perfect Squares
Factor quadratic expressions of the general perfect square forms: (ax)^2+2abx+b^2 or (ax)^2-2abx+b^2. The factored expressions have the general forms (ax+b)^2 or (ax-b)^2.
Help Algebra
Help algebra.com: Factor by Grouping
Factor a quadratic by group the terms. This resource demonstrates the procedure, then gives and explanation on why this process works.
Other
Cre: Ecuaciones Cuadraticas
In Spanish. Clear step by step directions, explanations and example problems of quadratic equations. Explains factorization, the quadratic formula, and completing the square.
Math Medics
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.
CK-12 Foundation
Ck 12: Find Imaginary Solutions: Fundamental Theorem of Algebra
[Free Registration/Login may be required to access all resource tools.] Here you will learn about the Fundamental Theorem of Algebra, and how to apply it to various functions. You will also review using the quadratic equation to find...
Texas Instruments
Texas Instruments: Connecting Factors and Zeros
Students will determine if a quadratic formula is factorable, then they will factor the equation, set each factor equal to 0, and solve for x.
Other
Mathway: Algebra Formulas
Comprehensive resource provides algebra formulas for exponents, absolute value, factoring Pythagorean Theorem, linear equations, quadratic formula, distance formula, midpoint formula, and slope of a line through two points.
Alabama Learning Exchange
Alex: Zero Product Property
The zero product property allows you to solve a quadratic equation by converting it into two linear equations. This is a common strategy of algebra--to break down a problem into simpler parts, each solved by previously learned methods.
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).
Khan Academy
Khan Academy: Perfect Squares
Factor quadratic expressions of the general perfect square forms. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Elias Saab
Math Drills: Roots of Polynomial Functions Quiz
An interactive quiz which provides students with a problem involving a polynomial function to be solved. Students input their solution and have the program evaluate it. Hints are available if the student needs them, and explanations are...
Mangahigh
Mangahigh: Algebra: Solve Trinomials With 2 Terms
Students learn about the concept of solving binomials by exploring a tutorial. They can then test their knowledge by taking a ten question assessment that increases in difficulty as they correctly answer questions.
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.
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...
CK-12 Foundation
Ck 12: Find Imaginary Solutions
[Free Registration/Login may be required to access all resource tools.] In this lesson, students are finding complex roots of polynomials and applications of the Fundamental Theorem of Algebra. Students examine guided notes, review...
Paul Dawkins
Paul's Online Notes: Algebra Cheat Sheet [Pdf]
An algebra "cheat sheet" to use as a reference when completing algebra homework. Lists basic facts, properties, operations, formulas, and functions, as well as common errors.
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