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If 1, w, w^(2) are three cube roots of u...

If `1, w, w^(2)` are three cube roots of unity, then `(1 - w+ w^(2)) (1 + w-w^(2))` is _______

A

1

B

2

C

3

D

4

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The correct Answer is:
D
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HIMALAYA PUBLICATION-COMMON ENTRANCE TEST -2015-QUESTION BANK
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  4. Solve for x tan^(-1) ((1-x)/(1+x))=(1)/(2) tan^(-1)x, x gt 0

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  6. The value of tan (1^(@)) + tan (89^(@)) is

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  8. The remainder obtained when 1! + 2! + 3!+….+ 11! is divided by 12 is

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  9. If alpha le 2 sin^(-1) x + cos^(-1) x le beta, then

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  10. If A= [(0,1),(1,0)], then A^(2) equal to

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  11. The function f(x)= [x], where [x] denotes greatest integer function is...

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  20. If P = |(x,1),(1,x)|and Q = |(x,1,1),(1,x,1),(1,1,x)| then (dQ)/(dx) =

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