Online College Courses for Credit

Completing the Square

Completing the Square

Author: chris ludbrook

1.  Solve quadratic equations by completing the square.

The previous sections have introduced methods to find solutions to quadratic equations when the roots or zeros are rational numbers.  In this section, we will examine how to "make" a quadratic easy to factor by completing the square.  

See More

Try Our College Algebra Course. For FREE.

Sophia’s self-paced online courses are a great way to save time and money as you earn credits eligible for transfer to many different colleges and universities.*

Begin Free Trial
No credit card required

47 Sophia partners guarantee credit transfer.

299 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 33 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.


This video demonstrates the process of completing the square using a sample problem.

Source: Khan Academy

Steps to Complete the Square