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Verified answer
Kelas 10 MatematikaBab Pertidaksamaan Kuadrat
2x² - 5x - 12 > 0
(2x + 3) (x - 4) > 0
x - 4 > 0
x > 4
2x + 3 < 0
2x < -3
x < -3/2
Maka, x < -3/2 atau x > 4
Verified answer
[Pertidaksamaan Kuadrat]2x² - 5x - 12 > 0
2x² - 8x + 3x - 12 > 0
2x(x - 4) + 3(x - 4) > 0
(2x + 3)(x - 4) > 0
Ingat Bentuk (x + a)(x - b) > 0, maka x < -a atau x > b
Jadi...
(2x + 3)(x - 4) > 0
x < -3/2 atau x > 4
Hp : {x < -3/2 atau x > 4}