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If alpha" and "beta are the roots of the...

If `alpha" and "beta` are the roots of the equation `x^(2)+2x+4=0, " then "(1)/(alpha^3)+(1)/(beta^3)` is equal to

A

`(-1)/(2)`

B

`(1)/(2)`

C

`32`

D

`(1)/(4)`

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The correct Answer is:
D
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NEW JOYTHI PUBLICATION-COMPLEX NUMBERS AND QUADRATIC EQUATIONS-QUESTIONS FROM COMPETITIVE EXAMS
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