On an Argand diagram, z₁ is plotted at the point (5, −4) and z₂ at the point (5, 4). Identify z₁ and z₂ and find their sum z₁ + z₂.
University of Ilorin MTH101 2026-exam past question
- 5 + 0i
- 10 + 0i
- 5 + 8i
- 10 + 8i
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