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Verified answer
1•|9 - 2x| ≥ 3
9 - 2x ≥ 3 atau 9 - 2x ≤ -3
•
9 - 2x ≥ 3
-2x ≥ 3 - 9
-2x ≥ -6
x ≤ -6/-2
x ≤ 3
9 - 2x ≤ -3
-2x ≤ -3 - 9
-2x ≤ -12
x ≥ -12/-2
x ≥ 6
HP = {x| x ≤ 3 atau x ≥ 6, x e R}
2•
|4x - 1| < |2x + 3|
(4x - 1)² - (2x + 3)² < 0
➡ Ingat rumus : a² - b² = (a + b)(a - b)
(6x + 2)(2x - 4) < 0
-2/6 < x < 2
-1/3 < x < 2
HP = {x| -1/3 < x < 2 , x e R}