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9 x² + 2x + 1 = 0

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Answer to a math question 9 x² + 2x + 1 = 0

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$x_{1,2}=\frac{-2\pm \sqrt{2^{2}-4\cdot 9\cdot 1}}{2\cdot 9}$

$x_{1,2}=\frac{-2\pm 4\sqrt{2}i}{2\cdot 9}$

$x_{1}=\frac{-2+4\sqrt{2}i}{2\cdot 9},x_{2}=\frac{-2-4\sqrt{2}i}{2\cdot 9}$

$=-\frac{1}{9}+i\frac{2\sqrt{2}}{9}$

$=-\frac{1}{9}-i\frac{2\sqrt{2}}{9}$

$x=-\frac{1}{9}+i\frac{2\sqrt{2}}{9},-\frac{1}{9}-i\frac{2\sqrt{2}}{9}$

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