(2x - 1)(x - 9) ≤ 0
2(x - 0,5)(x - 9) ≤ 0
(x - 0,5)(x - 9) ≤ 0
+ - +
______[0,5]_______[9]______
/////////////////////
Ответ : x ∈ [0,5 ; 9]
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(2x - 1)(x - 9) ≤ 0
2(x - 0,5)(x - 9) ≤ 0
(x - 0,5)(x - 9) ≤ 0
+ - +
______[0,5]_______[9]______
/////////////////////
Ответ : x ∈ [0,5 ; 9]