Jawaban:
a. HP = x ≤ -1 atau x ≥ 2
b. HP = -1 ≤ x ≤ 5/2
Penjelasan dengan langkah-langkah:
a.
x² -x -2 ≥ 0
(x-2)(x+1) = 0
x = 2 / x = -1
HP = x ≤ -1 atau x ≥ 2
b.
2x² -3x - 5 ≤ 0
(2x-5)(x+1)
x = 5/2 atau x = -1
HP = -1 ≤ x ≤ 5/2
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Jawaban:
a. HP = x ≤ -1 atau x ≥ 2
b. HP = -1 ≤ x ≤ 5/2
Penjelasan dengan langkah-langkah:
a.
x² -x -2 ≥ 0
(x-2)(x+1) = 0
x = 2 / x = -1
HP = x ≤ -1 atau x ≥ 2
b.
2x² -3x - 5 ≤ 0
(2x-5)(x+1)
x = 5/2 atau x = -1
HP = -1 ≤ x ≤ 5/2