Elementary Algebra is an open textbook that is available to read for free on the flatworld knowledge website.

**Chapter 9**gives an introduction to solving general quadratic equations and graphing quadratic functions. In addition, complex numbers and complex solutions are covered.

9.1 Extracting Square Roots

9.2 Completing the Square

9.3 Quadratic Formula

9.4 Guidelines for Solving Quadratic Equations and Applications

9.5 Graphing Parabolas

9.6 Introduction to Complex Numbers and Complex Solutions

You will find a complete review exercise section and a practice test.

9.7 Review Exercises and Sample Exam

Feel free to copy and paste the links found here and post them in your LMS. Links to all of the chapters can be found by clicking the Elementary Algebra course button at the top of this page.

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