Question

prove that ( 1+ w-w²)(1- w + w²) = 4​

Answer 1

Step-by-step explanation:

As we know that

1+ w+w²=0 & w³=1.

Now we have given that

(1+w-w²)(1-w+w²)

(-w²-w²)(-w-w)

(-2w²)(-2w)

4w³

=4.

I HOPE THIS HELPS YOU.

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