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Complex Numbers
easy
0:00.0
If
z
=
9
−
7
i
z = 9 - 7i
z
=
9
−
7
i
, what is the value of
z
ˉ
ˉ
\bar{\bar{z}}
z
ˉ
ˉ
?
A
9 + 7i
B
9 - 7i
C
-9 + 7i
D
-9 - 7i
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