pertidaksamaan X2 -X < 30

x² - x < 30
x² - x - 30 < 0
(x + 5)(x - 6) < 0
x < - 5 atau x > 6

x² - x < 30
x² - x - 30 < 0
(x - 6)(x + 5) < 0
Harga nol=
*x-6 = 0
x= 6
*x + 5 = 0
x = -5

x < -5 atau x > 6