/ / ____ \ ____ \
| |7 \/ 57 | 7 \/ 57 |
Or|And|- - ------ <= x, x < 0|, - + ------ <= x|
\ \2 2 / 2 2 /
$$\left(\frac{7}{2} - \frac{\sqrt{57}}{2} \leq x \wedge x < 0\right) \vee \frac{7}{2} + \frac{\sqrt{57}}{2} \leq x$$
(7/2 + sqrt(57)/2 <= x)∨((x < 0)∧(7/2 - sqrt(57)/2 <= x))
____ ____
7 \/ 57 7 \/ 57
[- - ------, 0) U [- + ------, oo)
2 2 2 2
$$x\ in\ \left[\frac{7}{2} - \frac{\sqrt{57}}{2}, 0\right) \cup \left[\frac{7}{2} + \frac{\sqrt{57}}{2}, \infty\right)$$
x in Union(Interval.Ropen(7/2 - sqrt(57)/2, 0), Interval(7/2 + sqrt(57)/2, oo))