Løs for x (complex solution)
x=\frac{18^{\frac{2}{3}}\left(1+\sqrt{3}i\right)\left(\sqrt[3]{\sqrt{93}+9}+2\sqrt[3]{\sqrt{93}-9}+\sqrt[3]{9\left(\sqrt{31}+3\sqrt{3}\right)}i\right)}{72}\approx -0,341163902+1,1615414i
x=\frac{18^{\frac{2}{3}}\left(\sqrt[3]{\sqrt{93}+9}-\sqrt[3]{\sqrt{93}-9}\right)}{18}\approx 0,682327804
x=\frac{18^{\frac{2}{3}}\left(-\sqrt{3}i+1\right)\left(-\sqrt[3]{9\left(\sqrt{31}+3\sqrt{3}\right)}i+\sqrt[3]{\sqrt{93}+9}+2\sqrt[3]{\sqrt{93}-9}\right)}{72}\approx -0,341163902-1,1615414i
Løs for x
x = \frac{18 ^ {\frac{2}{3}} {(\sqrt[3]{\sqrt{93} + 9} + \sqrt[3]{9 - \sqrt{93}})}}{18} \approx 0,682327804
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