Question

Resolva, em R, a inequação: (3x + 3) * (5x - 3)≥ 0

Answer 1

$(3X+3) . (5X-3) \geq 0 \\ \\ (3X+3) \geq 0 \\ \\ 3X \geq -3 \\ \\ X \geq - \frac{3}{3} \\ \\ X \geq -1 \\ \\ \\ (5X-3) \geq 0 \\ \\ 5X \geq 3 \\ \\ X \geq \frac{3}{5}$

S = {X ∈ IR | 1 ≤ X ≤ 3/5}