1) (x + 5)(x - 7) < 0
+ - +
______₀______₀_______
- 5 7
//////////////
Ответ : x ∈ ( - 5 ; 7)
2) (x - 1)² (2x - 1)(x + 2) ≤ 0
(x - 1)² * 2(x - 0,5)(x + 2) ≤ 0
(x - 1)²(x - 0,5)(x + 2) ≤ 0
+ - + +
______[- 2]______[0,5]______[1]_______
////////////////////
Ответ : x ∈ [ - 2 ; 0,5]
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Verified answer
1) (x + 5)(x - 7) < 0
+ - +
______₀______₀_______
- 5 7
//////////////
Ответ : x ∈ ( - 5 ; 7)
2) (x - 1)² (2x - 1)(x + 2) ≤ 0
(x - 1)² * 2(x - 0,5)(x + 2) ≤ 0
(x - 1)²(x - 0,5)(x + 2) ≤ 0
+ - + +
______[- 2]______[0,5]______[1]_______
////////////////////
Ответ : x ∈ [ - 2 ; 0,5]