Question
Question: A square root of 3 + 4i is...
A square root of 3 + 4i is
A
3+i
B
2 – I
C
2 + I
D
None of these
Answer
2 + I
Explanation
Solution
Sol. 3 + 4i = 4 – 1 + 2 × 2 × i = (2)2 + (i)2 + 2 × 2 × i
= (2 × i)2
A square root of (3 + 4i) is (2 + i)