SOLUTION: to solve by completing the square, what value should be added to both sides of the equation x^2+18x=-1

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Question 766566: to solve by completing the square, what value should be added to both sides of the equation x^2+18x=-1
Answer by nerdybill(7384) About Me  (Show Source):
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to solve by completing the square, what value should be added to both sides of the equation x^2+18x=-1
.
(b/2)^2
(18/2)^2
(9)^2
81 (answer)