1 1 1 --------- - ----------- > -------------------- _______ _________ _________________ \/ 8 - x \/ 2*x + 1 / 2 \/ 8 + 15*x - 2*x
-1/sqrt(2*x + 1) + 1/(sqrt(8 - x)) > 1/(sqrt(-2*x^2 + 15*x + 8))