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# Completing the Square

## Create perfect square trinomials using the additive property of equality

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Completing the Square

by CK-12 //at grade
Solve quadratic equations by completing the square.
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• PLIX

## Completing the Square

by CK-12 //at grade
Completing the Square Interactive
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• Video

## Solving Quadratic Equations by Completing the Square: An Explanation of the Concept

by CK-12 //at grade
This video provides an explanation of the concept of solving quadratic equations by completing the square.
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• Video

## Solving Quadratic Equations by Completing the Square: A Sample Application

by CK-12 //at grade
This video demonstrates a sample use of solving quadratic equations by completing the square.
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• 1
• Critical Thinking

## Completing the Square Discussion Questions

by CK-12 //at grade
A list of student-submitted discussion questions for Completing the Square.
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• Real World Application

## Fireworks

by CK-12 //at grade
When’s the best time to blow up fireworks?
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• Study Guide

## Solving Quadratic Equations Study Guide

by CK-12 //at grade
This study guide gives an overview of methods to solve quadratic functions: solving by square roots (special case), completing the square, using the quadratic formula. It also looks at using the discriminant to determine the number of solutions.
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