Complex Numbers Part 1

Section: Mathematics
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Question : 1 of 100
 
Marks: +1, -0
If z2+z+1=0,z∈C, then
|
15
∑
n=1
(zn+(−1)n‌
1
zn
)
2
|
is equal to____
[26-Jun-2022-Shift-2]
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