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Verified answer
X² - x - 12----------------- ≤ 0
x² + 3x - 10
(x - 4)(x + 3)
------------------ ≤ 0
(x -2)(x + 5)
buat garis bilangan di -5, -3, 2, 4 lalu tentukan daerah + dan -
+ + + + _ _ _ _ _ + + + + + _ _ _ _ + + +
---------•------------•-----------•----------•----------
`````````` -5 `````````` -3 ``````````` 2 ``````````` 4
-5 ≤ x ≤ -3 atau 2 ≤ x ≤ 4
syarat
x² + 3x - 10 ≠ 0
(x - 2)(x + 5) ≠ 0
x ≠ 2 dan x ≠ -5
maka hp
-5 < x ≤ -3 atau 2 < x ≤ 4