Algebra 2 Online! Henrico County Public Schools, Virginia
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.

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1. Video Tutor - Solving Quadratics by Completing the Square