Odpowiedź :
Odpowiedź:
3x = - 6
x = - 6/3 = - 2
x² = 4
x² - 4 = 0
(x - 2)(x + 2) = 0
x = 2 ∨ x = - 2
x(x + 2) = 0
x = 0 ∨ x + 2 = 0
x = 0 ∨ x = - 2
Odpowiedź:
3x = - 6
x = - 6/3 = - 2
x² = 4
x² - 4 = 0
(x - 2)(x + 2) = 0
x = 2 ∨ x = - 2
x(x + 2) = 0
x = 0 ∨ x + 2 = 0
x = 0 ∨ x = - 2