AP EAMCET · Maths · Complex Number
The complex conjugate of \((4-3 i)(2+3 i)(1+4 i)\) is
- A \(7+74 i\)
- B \(-7+74 i\)
- C \(-7-74 i\)
- D \(7-74 i\)
Answer & Solution
Correct Answer
(C) \(-7-74 i\)
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \text { }(4-3 i)(2+3 i)(1+4 i)=(4-3 i)(-10+11 i) \\ & =-40+44 i+30 i+33=-7+74 i \end{aligned}\) Complex conjugate \(=-7-74 i\)
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