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August 2, 2015

Homework Help: Algebra 2 ..

Posted by Anonymous on Tuesday, December 25, 2012 at 3:56pm.

Solve the equation by completing the square.
x^2-2=9x
My answer: x=9/2+or- the sqrt. of 22.25
(but when I checked my answer the actual answer was x=9+or - the sqrt. of 89 and then all over 2)
Please explain why my answer is different from the actual answer.

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