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Verified answer
Bab Nilai MutlakMatematika SMA Kelas X
|2x + 3|² - |2x + 3| >= 6
|2x + 3| = p
p² - p - 6 >= 0
(p - 3) (p + 2) >= 0
p + 2 <= 0
p <= -2
p - 3 >= 0
p >= 3
|2x + 3| <= -2 (tidak memenuhi, karena -2 adalah bilangan negatif)
|2x + 3| >= 3
-3 >= 2x + 3 >= 3
-3 - 3 >= 2x + 3 - 3 >= 3 - 3
-6 >= 2x >= 0
-6/2 >= 2x/2 >= 0/2
-3 >= x >= 0
x <= -3 atau x >= 0
HP = { x | x <= -3 atau x >= 0, x € bilangan real }