(x + 5)*(x - 3) < x
(x - 3)*(x + 5) < x
/ ____ ____ \ | 1 \/ 61 1 \/ 61 | And|x < - - + ------, - - - ------ < x| \ 2 2 2 2 /
(x < -1/2 + sqrt(61)/2)∧(-1/2 - sqrt(61)/2 < x)
____ ____ 1 \/ 61 1 \/ 61 (- - - ------, - - + ------) 2 2 2 2
x in Interval.open(-sqrt(61)/2 - 1/2, -1/2 + sqrt(61)/2)