x ∈ (-4; 2,5) ∪ (3; +∞)
Пошаговое объяснение:
(2х + 5)(х + 4)(х - 3) > 0
(2х + 5)(х + 4)(х - 3) = 0
2x - 5 = 0
2x = 5
x + 4 = 0
x₂ = -4
x - 3 = 0
x₃ = 3
