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Complex numbers 2 — Question 1

QCAA 2024, Paper 2 · 1 mark

Q1 · 2024 · Technology-activeSimple familiar1 mark

QUESTION 1

Given that z=−2+3iz=-2+3i is a root of z3+az+b=0z^3+az+b=0, where a,b∈Ra,b\in\mathbb R, another root is
(A)
−2−3i-2-3i
(B)
−2+3i-2+3i
(C)
2−3i2-3i
(D)
2+3i2+3i
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