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Complex Numbers
easy
0:00.0
Find the value of
z
⋅
z
ˉ
z \cdot \bar{z}
z
⋅
z
ˉ
if
z
=
5
−
2
i
z = 5 - 2i
z
=
5
−
2
i
.
A
21
21
21
B
25
25
25
C
29
29
29
D
27
27
27
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