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(2x + 1 + x - 2)(2x + 1 - x + 2) ≥ 0
(3x - 1)(x + 3) ≥ 0
Harga nol
3x - 1 = 0 x + 3 = 0
3x = 1 x = -3
x = 1/3
HP = { x| x ≤ -3 atau x ≥ 1/3, x E R}
maaf kalau salah