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SOLUTION: Solve the equation by completing the square x^2 + 6x − 12 = 0
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Question 558703
:
Solve the equation by completing the square
x^2 + 6x − 12 = 0
Answer by
richard1234(6688)
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Rewrite as (x+3)^2 - 21 = 0.
(x+3)^2 = 21
x+3 = +/- sqrt(21)
x = +/- sqrt(21) - 3