Bonjour
(3x+1) (x-2) -3x ≤ 1
(3x + 1) (x - 2) - 3x - 1 ≤ 0
(x - 3) (3x + 1) ≤ 0
(x - 3) ≤ 0 et 3x + 1 ≤ 0
x ≤ 3 3x ≥ - 1
x ≥ - 1/3.
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Bonjour
(3x+1) (x-2) -3x ≤ 1
(3x + 1) (x - 2) - 3x - 1 ≤ 0
(x - 3) (3x + 1) ≤ 0
(x - 3) ≤ 0 et 3x + 1 ≤ 0
x ≤ 3 3x ≥ - 1
x ≥ - 1/3.