Question

Помогите розв'язать приклад x³-4x=0

Answer 1

x³ - 4x = 0
x(x² - 4) = 0
x(x - 2)(x + 2) = 0
x = 0            x - 2 = 0            x + 2 = 0
                    x = 2                 x = - 2
Ответ : 0 ; 2 ; - 2