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x³ -2x² - 3 x ≥ 0
x (x² -2x - 3) ≥ 0
x≥ 0
x² - 2x - 3 ≥ 0
(x-3)(x+1) ≥ 0
x - 3 ≥ 0 ---> x ≥ 3
x + 1 ≥ 0 ---> x ≥ -1
RTA = 1) [-1,1] U [3, ∞)
Incluye A (-1) Y A (1) Ya Que 1 Es > a 0 Y A 3 Porque 3 Es > a 0