Question

if w is a complex cube root of unity, then (x + 1) (x +w) (x - W - 1) =
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Answer 1

Step-by-step explanation:

(x+1) (x+w)(x-(w+1))

Putting value of w+1

(x+1)(x+w)(x+w^2)

(x+1)(x^2+xw^2+wx+w^3)

(x+1)(x^2+x(w^2 +w) +1)

(x+1)(x^2-x+1)

X^3+y^3