Ebatzi: x (complex solution)
x=-\frac{3^{\frac{5}{6}}\times 9^{\frac{2}{3}}\left(1+\sqrt{3}i\right)\left(\left(-\sqrt[3]{\sqrt{2913}-54}+2\sqrt[3]{-\sqrt{2913}-54}\right)\sqrt[6]{3}-\sqrt[3]{9\left(\sqrt{2913}-54\right)}i-\sqrt[3]{9}\times 3^{\frac{2}{3}}i+\sqrt[3]{9}\sqrt[6]{3}\right)}{108}\approx -0.000993164-1.982533185i
x=\frac{9^{\frac{2}{3}}\left(\sqrt[3]{\sqrt{2913}-54}+\sqrt[3]{-\sqrt{2913}-54}-\sqrt[3]{9}\right)}{9}\approx 0.217420684+2.108634479i
x=-\frac{3^{\frac{5}{6}}\times 9^{\frac{2}{3}}\left(-\sqrt{3}i+1\right)\left(\left(-\sqrt[3]{\sqrt{2913}-54}+2\sqrt[3]{-\sqrt{2913}-54}\right)\sqrt[6]{3}+\sqrt[3]{9\left(\sqrt{2913}-54\right)}i+\sqrt[3]{9}\times 3^{\frac{2}{3}}i+\sqrt[3]{9}\sqrt[6]{3}\right)}{108}\approx -3.21642752-0.126101294i
Ebatzi: x
x=-\frac{9^{\frac{2}{3}}\sqrt[3]{\sqrt{2913}+54}}{9}-\frac{9^{\frac{2}{3}}\sqrt[3]{54-\sqrt{2913}}}{9}-1\approx -3.434841368
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