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Cambridge IGCSE Additional Mathematics

4.1Modulus equations

Modulus equations in Cambridge IGCSE Additional Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic18 practice questions1 lesson

Learning objectives

What the syllabus expects you to be able to do.

  1. 4.1Solve equations involving the modulus of linear and quadratic expressions algebraically or graphically.

Lessons

  • Modulus equations

    30 min

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Sample question

A sample question on this topic. Answer it, check it, then read the worked answer.

Modulus equations: sample question

1 mark

Find the positive solution of ∣2x+1∣=9|2x + 1| = 9.

Complete: x = …

Only if the answer has a unit, e.g. cm or km/h.

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