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Das
(Udesc-SC) O conjunto solução x² - 2x - 3 ≤ 0: a) {x ∈ ℝ | -1 < x < 3} b) {x ∈ ℝ | -1 < x < 3} c) {x ∈ ℝ | x < -1 ou x > 3} d) {x ∈ ℝ | x ≤ -1 ou x ≥ 3} e) {x ∈ ℝ | -1 ≤ x ≤ 3}
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