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Complex numbers and the Argand diagram

Add, multiply and divide complex numbers, find conjugates and moduli and show them on an Argand diagram.

In review 5th Year6th Year HigherOrdinary
16practice questions

Multiple choice: 7 · Numeric answer: 9

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Numeric answerPaper 1 – Number
Find the modulus of the complex number z = 12 + 16i.
Whole numbers, decimals (2.5) or fractions (3/4).
Hint 1

|a + bi| = √(a² + b²).

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