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if (x+i y)^(1/3) = a+ib then (x/a) + ...

if `(x+i y)^(1/3) = a+ib ` then `(x/a) + (y/b)` equals to

A

`4(a^(2)-b^(2))`

B

`2(a^(2)-b^(2))`

C

`2(a^(2)+b^(2))`

D

None of these

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A
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MCGROW HILL PUBLICATION-COMPLEX NUMBERS -SOLVED EXAMPLES LEVEL 1
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