SOLUTION: solve by completing the square 9x^2 +18X=-5 can anyone give a full break down why the answer is -1/3, -5/3 confused on how my book got -1/3 as an answer.

Question 228039: solve by completing the square

9x^2 +18X=-5

can anyone give a full break down why the answer is -1/3, -5/3 confused on how my book got -1/3 as an answer.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
solve by completing the square
9x^2 +18X=-5
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9(x^2+2x+1) = -5+9
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9(x+1)^2 = 4
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(x+1)^2 = 4/9
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x+1 = +2/3 or x+1 = -2/3
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x = -1/3 or x = -5/3
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Cheers,
Stan H.

can anyone give a full break down why the answer is -1/3, -5/3
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