Oswego City School District
Regents Exam Prep Center: Completing the Square
A lesson, practice exercise, and teacher resource to help you plan classroom instruction on completing the square. Lesson contains steps to completing the square and two step-by-step examples; practice exercise is a five-question quiz...
CK-12 Foundation
Ck 12: Algebra: Completing the Square
[Free Registration/Login may be required to access all resource tools.] Learn how to complete the square in order to solve quadratic equations.
Lawrence Hall of Science
The Math Page: Topics in Pre Calculus: Completing the Square
Here is a site that clearly and thoroughly explains how to solve quadratic equations by completing the square. The quadratic formula is derived using this method on this page. Point this site out to students who have been absent or who...
Illustrative Mathematics
Illustrative Mathematics: N cn.c.7 and a rei.b.4.a: Completing the Square
The goal of this task is to solve quadratic equations with complex roots by completing the square. Aligns with N-CN.C.7 and A-REI.B.4.aI.
Discovery Education
Discovery Education: Web Math: Complete the Square on a Polynomial
This WebMath site allows the student to type in a quadratic and have it solved by the completing the square method.
Khan Academy
Khan Academy: Solving Quadratics by Completing the Square
Practice some multiple-choice problems solving quadratics by completing the square.
Other
Nearpod: Quadratic Equations: Completing the Square
For this lesson on completing the square, learners explore the connection between area models and perfect square trinomials. They also learn how to complete the square to transform a quadratic equation into vertex form.
Wyzant
Wyzant: Completing the Square
The resource examines the algebra topic of completing the square. Students learn how to complete the square by reading the lesson and test their knowledge with practice problems. The resource includes a completing the square calculator.
Khan Academy
Khan Academy: Completing the Square
Solve quadratic equations of the form ax^2+bx+c by completing the square. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video, or receive hints.
Khan Academy
Khan Academy: Completing the Square (Intro)
Try these multiple-choice practice problems on completing the square.
Varsity Tutors
Varsity Tutors: Hotmath: Algebra Review: Complete the Square
Find a quick, concise explanation of how to complete the square. An example is given and explained to illustrate the method.
Purple Math
Purplemath: Completing the Square: Solving Quadratic Equations
Purplemath gives several examples which clearly show the process of completing the square to find the maximum and minimum solutions to a quadratic equation.
Math Medics
S.o.s. Math: Quadratic Formula: Completing the Square
This tutorial explains the quadratic formula by reviewing its origin from the process of completing the square. Includes examples and a few exercises.
Purple Math
Purplemath: Completing the Square: Deriving the Quadratic Formula
View examples on completing the square and deriving the quadratic formula. The key to solving by completing the square is "practice, practice, practice". By so doing, the process will become more "automatic", and you'll be much more...
Mangahigh
Mangahigh: Algebra: Use the Completed Square
Students learn about the concept of completing the square by exploring a tutorial. They can then test their knowledge by taking a ten question assessment that increases in difficulty as they correctly answer questions.
Math Medics
S.o.s. Math: Quadratic Equations
This lesson shows a step-by-step procedure for solving a quadratic equation by completing the square.
Math Is Fun
Math Is Fun: Completing the Square
The learning resource investigates how to complete the square. Students learn about the algebra concept by exploring definitions and examples. A link to practice problems is included.
Texas A&M University
Wtamu Virtual Math Lab: College Algebra: Quadratic Equations
A detailed tutorial that will guide you through various methods for solving quadratic equations: factoring, square root, completing the square, and quadratic formula. Follow step-by-step examples, view video problem-solving...
Math Is Fun
Math Is Fun: Derivation of Quadratic Formula
The learning resource investigates the quadratic formula. Students learn how the formula is derived by completing the square and solving for x.
BBC
Bbc: Higher Bitesize Maths: Quadratic Theory
A tutorial on quadratics presents topics including: factoring and solving quadratics, graphing quadratic functions, using completing the square and the quadratic formula to solve functions, the discriminant and conjugates. Plenty of...
Wyzant
Wyzant: Solve by Completing the Square
The practice sheet reviews how to solve equations by completing the square. The resource consists of an answer sheet and example problem.
Free Math Help
Free Math Help: Completing the Square in Circle Equations
This discussion examines how to complete the square in circle equations. Students learn about the math concept through definitions and examples with detailed solutions.
Other
Completing the Square to Get a Quadratic Function Into Standard Form
This site shows students how to put a quadratic function into standard form by completing the square.
Wyzant
Wyzant: Completing the Square Calculator
The learning tool is a calculator that solves equations by completing the square. An example and quick-start guide is available.