Răspuns:
Explicație pas cu pas:
(x - 2)(1/x - 2) ≤ 0 <=>
(x-2)(1-2x)/x ≤ 0
x-2 = 0 => x = 2 ; 1-2x = 0 => x = 1/2
x I -∞ 0 1/2 2 +∞
x-2 I---------------------------0++++++++++++
1-2x I+++++++++++++0-------------------------
(x-2)(1-2x) I---------------------0++0-------------------
x I----------------0+++++++++++++++++++
(x-2)(1-2x)/x I++++++++++I----0++0-------------------- =>
x ∈ (0 ; 1/2) ∪ [2 ; +∞)