Hej!
x³ - 3x² - 4x + 12 = 0
x²(x - 3) - 4(x - 3) = 0
(x² - 4)(x - 3) = 0
(x - 2)(x + 2)(x - 3) = 0
x = 2
x = -2
x = 3
Pozdrawiam! - Julka
Szczegółowe wyjaśnienie:
[tex] {x}^{2} (x - 3) - 4(x - 3) = 0 \\ ( {x}^{2} - 4)(x - 3) = 0 \\ (x - 2)(x + 2)(x - 3) = 0 \\ x = 2 \\ x = - 2 \\ x = 3[/tex]
