Complex Numbers — 2025 Prelim Solutions Complex Numbers — 2025 Prelim Solutions 20 questions drawn from 2025 JC Preliminary Examinations — Math Academy Q1 RVHS / P1 / Q3 Find the roots of the equation \(z^2 – (1+2\mathrm{i})z + 1 + 7\mathrm{i} = 0\), giving your answers in the cartesian form \(a + b\mathrm{i}\). Solution: […]
by Ian ang