Question

Prove that (1-ω+ω^2) (1+ω-ω^2)=4

Answer 1

will u try out this for me? u already know the formulas to be used....

Answer 2

Some mistakes for the first bracket.
(1-ω+ω^2)
= (1+ω^2 - ω)
= -ω- ω
= ...

Answer 3

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

Answer 4

by using formula ( 1+w+w^2) we get 1-w+w^2 = -2w and 1+w-w^2 = -2w^2