SOLUTION: Please solve by completing the square x^2 + 15x = -56

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Question 373558: Please solve by completing the square
x^2 + 15x = -56
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
x^2 + 15x = -56
..
x^2 + 15x +225/4= -56+(225/4)
..
(x+7.5)^2=1/4
..
Take the square root of both sides
(x+7.5)= +/-(1/2)
x= -7.5-(1/2)= -8
OR
x=-7.5+1/2=-7
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m.ananth@hotmail.ca