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Solving Quadratic Equations by Factoring

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More Lessons for Grade 9 Math, Math Worksheets

Videos, worksheets, examples, games and activities to help Algebra students learn about solving quadratic equations by factoring with and without trial and error.

How to Use UnFOIL to Factor Quadratic Equations
Using the unFOIL method to factor quadratic equations into two binomials requires many steps.
Example: Factorize 2x2 - 5x - 12
Factoring quadratics without trial and error
This video shows a quick method for factoring quadratic expressions where the coefficient of the x squared term is not 1. This is a quick method that allows the correct answer to be achieved without trial and error and guess work.
2x2 + 9x + 4
3x2 - x - 2
12x2 - 11x + 2

Solving Quadratic Equations by Factoring
Example: Solve the following quadratic equations by factoring
x2 - 4x = 12

Rotate to landscape screen format on a mobile phone or small tablet to use the Mathway widget, a free math problem solver that answers your questions with step-by-step explanations.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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