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Wednesday, September 19, 2007

Completing the Square - College

Solve the following quadratic equation by completing the square:





Answer:

x = 5 or x = 1


Explanation:

First add (-5) to both sides. This is done in order to move the (-5) to the right side of the equation:






Second, add 9 to both sides. This will make the left side of the equation a perfect square:








Take the square root of both sides and solve for x :
















© Copyright 2007.Najwa S. Hirn. All rights reserved.

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