[latex] \frac{1}{ x^{2} } + \frac{1}{x} - x - 3 = 0[/latex]

[latex] \frac{1}{ x^{2} } + \frac{1}{x} -x-3=0\\ \\ \frac{1}{ x^{2} } + \frac{x}{ x^{2} } - \frac{ x^{3} }{ x^{2} } - \frac{3 x^{2} }{ x^{2} } =0[/latex]