Пошаговое объяснение:
x ∈ (–∞; 1) ∪ (3; +∞) x ∈ (–3; –1) x ∈ (–∞; –3) ∪ (–1; +∞) x ∈ (–∞; –3) ∪ (1; +∞) x ∈ (–∞; –1) ∪ (3; +∞)
Пошаговое объяснение:
x ∈ (–∞; 1) ∪ (3; +∞) x ∈ (–3; –1) x ∈ (–∞; –3) ∪ (–1; +∞) x ∈ (–∞; –3) ∪ (1; +∞) x ∈ (–∞; –1) ∪ (3; +∞)