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Complex Numbers
medium
0:00.0
If
(
x
+
i
)
(
2
+
i
)
=
1
+
8
i
(x + i)(2 + i) = 1 + 8i
(
x
+
i
)
(
2
+
i
)
=
1
+
8
i
, find the real number
x
x
x
.
A
3
3
3
B
2
2
2
C
1
1
1
D
4
4
4
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