Question

If Z= (2+ i^5) then /z/ =
(b) 1
(a) root3
(c) root5
(d) None of these​

Answer 1

Answer:

${z}^{2} = 4 + 8 {i}^{5} + {i}^{10} \\ \\ \pink{ {i}^{4} = 1}$

${z}^{2} = 4 + 8i - 1 \\ \\ = 3 + 8i$

None of these hai option