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Question
Given the complex number z = 2 + 3i, represent the complex numbers in Argand diagram
z, – iz and z – iz
Solution
z = 2 + 3i
– iz = – i(2 + 3i)
= – 2i – 3i²
= – 2i + 3
= 3 – 2i
z – iz = 2 + 3i – 3 + 2i
= 5 + i
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