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If alpha is a complex constant such that...

If `alpha` is a complex constant such that `alphaz^2+z+baralpha=0` has areal root then

A

`alpha+balpha=1`

B

`alpha+baralpha=0`

C

`alpha+baralpha=(-1)`

D

the absolute value of the real root is 1

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The correct Answer is:
D
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