Find all the complex roots. write the answer in rectangular form. the complex cube roots of 8

 x³ = 8 
 x³  -  8 = 0
a=x      b=2

a³ - b³ = (a - b)(a² + ab + b²)
x³  - 8 = (x - 2)(x² + 2x + 2²)

(x - 2)(x² + 2x + 2²) = 0
(x - 2) = 0,    (x² + 2x + 4) = 0
       x = 2     
                     x =
                     x =

the complex roots of 8 are: 2, -1 + √3i, -1 - √3i