$$\left. \begin{array} { l } { 2 ( x ^ { 2 } + \frac { 1 } { x ^ { 2 } } ) - 9 ( x + \frac { 1 } { x } ) + 14 = 0 } \end{array} \right.$$
$x=1$
$x=2$
$x=\frac{1}{2}=0.5$
