(x - 4)/(x - 3) ≤ 5/(x^2 - 5·x + 6) - 1/(x - 2)
(x - 4)/(x - 3) - 5/((x - 2)·(x - 3)) + 1/(x - 2) ≤ 0
((x - 4)·(x - 2) - 5 + (x - 3))/((x - 2)·(x - 3)) ≤ 0
((x^2 - 6·x + 8) - 5 + (x - 3))/((x - 2)·(x - 3)) ≤ 0
(x^2 - 5·x)/((x - 2)·(x - 3)) ≤ 0
x·(x - 5)/((x - 2)·(x - 3)) ≤ 0
Segno N(x):
++++[0]---------------------[5]++++++>x
Segno D(x):
+++++++++(2)----(3)++++++++++++>x
Segno rapporto:
++++[0]----(2)+++(3)----[5]++++++++>x
Soluzione:
0 ≤ x < 2 ∨ 3 < x ≤ 5