Question

(1+w-w2)(1-w+w2)=4 prove it step by step​

Answer 1

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 it