Question

(1+w-w2)(1-w+w2)=4 prove it

Answer 1

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Step-by-step explanation:

we know 1+w+w2 = 0

hence we can write 1 + w = –w2 & 1 + w2 = –w

now ( –w –w)( –w2 –w2) = (–2w)* (–2w2)

4 w3 = 4  hence proved(we know that w3 = 1)