_________ 2*x + 1 \/ 2*x + 1 < ------- 2 - x
sqrt(2*x + 1) < (2*x + 1)/(2 - x)
/ ___ \ And\x < 2, 3 - \/ 6 < x/
(x < 2)∧(3 - sqrt(6) < x)
___ (3 - \/ 6 , 2)
x in Interval.open(3 - sqrt(6), 2)