/ ____________ \
| / ____ |
| / \/ 57 2 |
And|-oo < x, x < 1 + 3 / 1 + ------ + -------------------|
| \/ 9 ____________|
| / ____ |
| / \/ 57 |
| 3*3 / 1 + ------ |
\ \/ 9 /
$$-\infty < x \wedge x < \frac{2}{3 \sqrt[3]{\frac{\sqrt{57}}{9} + 1}} + 1 + \sqrt[3]{\frac{\sqrt{57}}{9} + 1}$$
(-oo < x)∧(x < 1 + (1 + sqrt(57)/9)^(1/3) + 2/(3*(1 + sqrt(57)/9)^(1/3)))
____________
3 ___ 3 / ____ 2/3
\/ 3 *\/ 9 + \/ 57 2*3
(-oo, 1 + --------------------- + -----------------)
3 ____________
3 / ____
3*\/ 9 + \/ 57
$$x\ in\ \left(-\infty, \frac{2 \cdot 3^{\frac{2}{3}}}{3 \sqrt[3]{\sqrt{57} + 9}} + 1 + \frac{\sqrt[3]{3} \sqrt[3]{\sqrt{57} + 9}}{3}\right)$$
x in Interval.open(-oo, 2*3^(2/3)/(3*(sqrt(57) + 9)^(1/3)) + 1 + 3^(1/3)*(sqrt(57) + 9)^(1/3)/3)