Datrys ar gyfer x
x=\frac{2\left(-\sqrt{13}\cos(\frac{\arccos(\frac{43\sqrt{13}}{338})}{3})+2\right)}{3}\approx -0.912229178
x=\frac{\sqrt{13}\left(\sqrt{3}\sin(\frac{\arccos(\frac{43\sqrt{13}}{338})}{3})+\cos(\frac{\arccos(\frac{43\sqrt{13}}{338})}{3})\right)+4}{3}\approx 3.198691244
x=\frac{\sqrt{13}\left(-\sqrt{3}\sin(\frac{\arccos(\frac{43\sqrt{13}}{338})}{3})+\cos(\frac{\arccos(\frac{43\sqrt{13}}{338})}{3})\right)+4}{3}\approx 1.713537935
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