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How to Complete the Square
When you are unable to solve a quadratic equation of the form ax² +bx+c by factoring, then you can use the technique called completing the square. To complete the square means to create a polynomial with three terms (trinomial) that is a perfect square.... More »
Difficulty: Moderate
Source: www.ehow.com


In elementary algebra, completing the square is a technique for converting a quadratic polynomial of the form. a x 2 + b x + c {\displaystyle ax^{2}+bx+c\,\!} ...


But if you have time, let me show you how to "Complete the Square" yourself. Completing the Square. Say we have a simple expression like x2 + bx. Having x  ...


For example, x²+6x+5 isn't a perfect square, but if we add 4 we get (x+3)². This, in essence, is the method of *completing the square*. Created by Sal Khan, ...


For example, solve x²+6x=-2 by manipulating it into (x+3)²=7 and then taking the square root.


Demonstrates, with step-by-step instructions and illustrations, how to complete the square to solve a quadratic equation.


Note: One of the many ways you can solve a quadratic equation is by completing the square. In this method, you want to turn one side of the equation into a ...


Completing the Square – Practice Problems Move your mouse over the "Answer" to reveal the answer or click on the "Complete Solution" link to reveal all of the ...

Jan 9, 2014 ... MIT grad shows the easiest way to complete the square to solve a quadratic equation. More videos with Nancy coming in 2017! To skip ahead: ...


This algebra lesson explains how to complete the square.