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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: Quadratic Equations Part I
Detailed math tutorial features notes and examples that illustrate how to solve quadratic equations by factoring and the square root property.
Math Planet
Math Planet: Use Graphing to Solve Quadratic Equations
A quadratic equation is an equation that can be written on the standard form ax^2 + bx + c = 0, where a is not = 0. One way of solving a quadratic equation is by factoring. Another way of solving a quadratic equation is to solve it...
Cuemath
Cuemath: Quadratic Equations
A comprehensive guide for learning all about quadratic equations with definitions, quadratic formulas, how to solve them, solved examples, and practice questions.
Khan Academy
Khan Academy: Quadratics by Factoring
Solve quadratic equations of the form ax^2+bx+c=0 that can be rewritten according to their linear factors.
Khan Academy
Khan Academy: Quadratics by Factoring (Intro)
Solve quadratic equations of the form x^2+bx+c=0 that can be rewritten according to their linear factors.
Alabama Learning Exchange
Alex: "Factoring by Mack"
This strategy for factoring trinomials will eliminate the trial-and-error method used in most textbooks.The lesson will be a direct teaching lesson. With the teacher lecturing and the young scholars taking notes and then having the...
Other
Dans Math: Lessons: Intermediate Algebra
College professor Dan Bach presents a review of algebra concepts, including factoring, quadratic equations, and graphing parabolas. The examples are detailed, but easy to follow. This is a good site for reviewing before tests and quizzes.