Question

how to find the three cube root of unity ?

Answer 1

x^3 = 1

x^3-1=0

(x-1)(x^2+x+1)=0

x-1=0 or x^2+x+1=0

x=1 or x^2+x+1=0

Now use the quadratic formula to solve x^2+x+1=0 to find the other two roots

Answer 2

thanks