Question
Mathematics Question on complex numbers
If z=3−i(3+i)(7−i)2, then the value of |z| is equal to
A
48
B
√50
C
50
D
√500
E
√48
Answer
50
Explanation
Solution
The correct option is (C) : 50
If z=3−i(3+i)(7−i)2, then the value of |z| is equal to
48
√50
50
√500
√48
50
The correct option is (C) : 50