Question

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Answer 1

3$3^{2} -5x +1 = 0$

∆ = (-5)2 - 4.3.1 = 13

$x_{1} = \frac{5 - \sqrt{13} }{2.3}$ ≈ 0.23241

$x_{2} \frac{5 + \sqrt{13} }{2.3}$ ≈ 1.4343