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Complex Numbers
easy
0:00.0
Evaluate
−
9
+
−
16
\sqrt{-9} + \sqrt{-16}
−
9
+
−
16
.
A
7
i
7i
7
i
B
25
i
25i
25
i
C
5
i
5i
5
i
D
7
7
7
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