Respuesta :

using general formula, we get

[tex]\begin{gathered} x=\frac{5+-\sqrt[]{25-4\cdot2\cdot-1}}{4} \\ x=\frac{5+-\sqrt[]{25+8}}{4}=\frac{5+-\sqrt[]{33}}{4} \end{gathered}[/tex]

so the answer is third answer

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