1)5x - 1 ≥ 25x ≥ 3x ≥ 3/5
5(x - 1) > 125x - 5 > 125x > 17x > 17/5
Ответ: x > 17/5
2)(x - 2)(x + 1) < 3x + 3x^2 - x - 2 < 3x + 3x^2 - 4x - 5 < 0(x - 5)(x + 1) < 0-1 < x < 5
x - 2 < 3x < 5
Ответ: -1 < x < 5
1)
5x - 1 ≥ 2
5x ≥ 3
x ≥ 3/5
5(x - 1) > 12
5x - 5 > 12
5x > 17
x > 17/5
Ответ: x > 17/5
2)
(x - 2)(x + 1) < 3x + 3
x^2 - x - 2 < 3x + 3
x^2 - 4x - 5 < 0
(x - 5)(x + 1) < 0
-1 < x < 5
x - 2 < 3
x < 5
Ответ: -1 < x < 5