Leystu fyrir x (complex solution)
x=\frac{\sqrt[3]{6\sqrt{1473}+235}+\sqrt[3]{235-6\sqrt{1473}}+1}{15}\approx 0.695101482
x=\frac{4}{5}=0.8
x=-\frac{\left(1+\sqrt{3}i\right)\left(-\sqrt[3]{3\left(18\sqrt{491}+235\sqrt{3}\right)}i-\sqrt[3]{6\sqrt{1473}+235}+2\sqrt[3]{235-6\sqrt{1473}}-1+\sqrt{3}i\right)}{60}\approx -0.247550741+0.350520191i
x=-\frac{\left(-\sqrt{3}i+1\right)\left(-\sqrt{3}i-\sqrt[3]{6\sqrt{1473}+235}+2\sqrt[3]{235-6\sqrt{1473}}-1+\sqrt[3]{3\left(18\sqrt{491}+235\sqrt{3}\right)}i\right)}{60}\approx -0.247550741-0.350520191i
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