TS EAMCET · Maths · Complex Number
If then
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Given (a+ib)14=2+3i ⇒(a+ib)=2+3i4 ⇒a+ib= 2+3i22=4+9i2+12i2 =4-9+12i2 =12i-52 =144i2+25-120i =-119-120i Comparing with a+ib a=-119, b=-120 Therefore 3b-2a=3(-120)-2(-119)=-122
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