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1. Hp dari 2x - 5 ≤ 5x - (2x + 1)
2x - 5 ≤ 5x - (2x + 1)
2x - 5 ≤ 5x - 2x - 1
2x - 5 ≤ 3x - 1
2x - 3x ≤ - 1 + 5
- x ≤ 4
x ≥ - 4
2. Hp dari x² - 6 ≥ x
x² - 6 ≥ x
x² - x - 6 ≥ 0
pembuat nol
x² - x - 6 = 0
(x - 3)(x - 2) = 0
x = 3 atau x = 2
himpunan penyelesaiannya adalah
2 < x < 3