SOLUTION: Solve the equation by completing the square. 9y^2 -12y -2 = 0

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Question 433037: Solve the equation by completing the square.
9y^2 -12y -2 = 0
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Solve the equation by completing the square.
9y^2 -12y -2 = 0
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9y^2-12y = 2
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9(y^2-(4/3)y+?) = 2+9(?)
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9(y^2-(4/3)y+(2/3)^2) = 2+9(2/3)^2
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9(y-(2/3))^2 = 2+4
(y-(2/3))^2 = 2/3
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y-(2/3) = +/- sqrt(2/3)
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y = (2/3)+sqrt(2/3) or y = (2/3)-sqrt(2/3)
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Cheers,
Stan H.
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