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Complex Numbers
easy
0:00.0
If
z
2
=
−
1
z^2 = -1
z
2
=
−
1
, what are the possible values of
z
z
z
?
A
1
1
1
B
−
1
-1
−
1
C
i
i
i
D
i
i
i
and
−
i
-i
−
i
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