Question

ω is a cube root of unity. Show the following?

Answer 1

w^3=1

w^-1=0

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

w^2+w+1=0

since, w≠1 as it complex,

w^2+w+1=0

Hence, LHS=RHS...

HØPÊ ÌT HÊLPS...