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Complex Numbers
easy
0:00.0
Find the real part of
(
1
+
i
)
(
2
−
i
)
(1 + i)(2 - i)
(
1
+
i
)
(
2
−
i
)
.
A
1
1
1
B
2
2
2
C
3
3
3
D
4
4
4
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