Question

5
Write down the conjugate of:
(1) (-3+/-1)
(ii) (6+5i) 2​

Answer 1

Answer:

\begin{gathered} {(6 + 5i)}^{2} = {6}^{2} + 2 \times 6 \times 5i + {(5i)}^{2} \\ = 36 + 60i - 25 \\ = 11 + 60i \\ therefore \: \: conjugate \: \: of \: \: {(6 + 5i)}^{2} \\ = conjugate \: \: of \: \: 11 + 60i \\ = 11 - 60i\end{gathered}

(6+5i)

2

=6

2

+2×6×5i+(5i)

2

=36+60i−25

=11+60i

thereforeconjugateof(6+5i)

2

=conjugateof11+60i

=11−60i

Step-by-step explanation:

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