Question 333437
x^3 = 4x

x^3 - 4x = 0

x(x^2 - 4) = 0

x = 0

AND

(x^2 - 4) becomes (x - 2)(x + 2).

x - 2 = 0

x = 2

AND

x + 2 = 0

x = -2

Final answer: x = -2, x = 0 x = 2