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Complex Numbers
medium
0:00.0
Simplify
1
+
i
1
−
i
−
1
−
i
1
+
i
\frac{1+i}{1-i} - \frac{1-i}{1+i}
1
−
i
1
+
i
−
1
+
i
1
−
i
.
A
2
i
2i
2
i
B
0
0
0
C
i
i
i
D
−
2
i
-2i
−
2
i
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