Algebra 2 Online!
Henrico County Public Schools, Virginia

 
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Module - Exploring Quadratic Functions and Inequalities
Lesson 3 - Solving Quadratic Equations by Completing the Square
Objective

The student will be able to solve quadratic equations by completing the square.

Complete the Square

The act of "completing the square" involves taking half the coefficient of x in the quadratic x2 + ax and adding its square.  This interactive geometric proof shows why this process works.  Move the sliders to answer the questions. The blue segments represent x and the green segments represent a.

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SOL

AII.4b       The student will solve, algebraically and graphically, quadratic equations over the set of complex numbers.  

Common Core Standards

Warm-up
  1. ExamView: Solving Equations by Factoring Review
Lessons
  1. Notes: Solving Equations by Completing the Square (ppt)
Videos

 

Explore Learning

 

Geogebra

 

Internet Sites
  1. Video Tutor - Solving Quadratics by Completing the Square
Tasks

 

Practice
  1. Classwork: Completing the Square #1-8 (pdf)
  2. Homework: Completing the Square #1-9 (pdf)
Assessment
  1. ExamView: Solving Equations by Completing the Square Quiz
Other

 

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