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Complex Numbers
hard
0:00.0
If
z
2
=
5
+
12
i
z^2 = 5 + 12i
z
2
=
5
+
12
i
, find
∣
z
∣
|z|
∣
z
∣
.
A
4
4
4
B
13
\sqrt{13}
13
C
3
3
3
D
5
5
5
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