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Question

If |z|=3, then 9+z1+¯z equals

A
z
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B
¯z
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C
3z
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D
z+¯z
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Solution

The correct option is A z
Given that, |z|=3
|z|2=9
z¯z=9
¯z=9z
let w=9+z1+¯z
w=9+z1+9z=z
Ans: A

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