Question

Прошу помогите !!!!!! Даю 10баллов

Answer 1

- x² - 3x + 4 ≤ 0
x² + 3x - 4 ≥ 0
(x + 4)(x - 1) ≥ 0
         +                -                      +
____________________________
               - 4                      1
x ∈ (- ∞ ; - 4] ∪ [1 ; + ∞)