If ω is a cube root of unity, then the value of (1 - ω + ω2) (1 + ω - ω2) is

If ω is a cube root of unity, then the value of (1 - ω + ω2) (1

1.	If ω is a cube root of unity, then the value of (1 - ω + ω2) (1 + ω - ω2) is
A.	1
B.	-1
C.	4
D.	-4
Answer» D. -4