_______ _______ _______ \/ x + 3 - \/ x - 2 < \/ x - 1
-sqrt(x - 2) + sqrt(x + 3) < sqrt(x - 1)
/ ____ \ |2*\/ 21 | And|-------- < x, x < oo| \ 3 /
(x < oo)∧(2*sqrt(21)/3 < x)
____ 2*\/ 21 (--------, oo) 3
x in Interval.open(2*sqrt(21)/3, oo)