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9b^2-6b-5

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Answer to a math question 9b^2-6b-5

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$\left(9b^2-6b+1\right)-5-1=\left(3b-1\right)^2-6$

$\left(3b-1\right)^2-\left(\sqrt{6}\right)^2=\left(3b-1-\sqrt{6}\right)\left(3b-1+\sqrt{6}\right)$

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