_____________ _________ \/ x + 2*x - 1 >= \/ 5*x - 8
sqrt(x + 2*x - 1) >= sqrt(5*x - 8)
And(8/5 <= x, x <= 7/2)
(8/5 <= x)∧(x <= 7/2)
[8/5, 7/2]
x in Interval(8/5, 7/2)