Реши уравнение

\(x^2+ \dfrac {1}{x^2}-\dfrac 12 \left ( x-\dfrac {1}{x} \right ) =3 \dfrac 12\)

• \(2;\, -\cfrac 12; \, -\cfrac 12 \pm \cfrac{\sqrt 5}{2}\)
• \(2;\, -\cfrac 12; \, \cfrac 12 \pm \cfrac{\sqrt 5}{2}\)
• \(2;\, -\cfrac 12; \, \cfrac 12; \, \cfrac{\sqrt 5}{2}\)
• \( \cfrac 12 \pm \cfrac{\sqrt 5}{2}\)