_____ \/ 2*x + 3 < x
sqrt(2*x) + 3 < x
/ ___ \ And\x < oo, 4 + \/ 7 < x/
(x < oo)∧(4 + sqrt(7) < x)
___ (4 + \/ 7 , oo)
x in Interval.open(sqrt(7) + 4, oo)