Question

if w is a cube root of unity then w cube is ____​

Answer 1

Answer:

D

−32w

∴w is cube root of unity

∴w

3

=1 and 1+w+w

2

=0

(1+w+w

2

)

5

+(1+w−w

2

)

5

=(0)

5

+(−w

2

−w

2

)

5

=(−2w

2

)

5

=−32w

10

=−32(w

3

)

3

.w

=−32w

Answer 2

Answer:

root

Step-by-step explanation:

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