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Cambridge IGCSE Additional Mathematics

2.4Solving quadratic equations

Solving quadratic equations in Cambridge IGCSE Additional Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic21 practice questions1 lesson

Learning objectives

What the syllabus expects you to be able to do.

  1. 2.4Solve quadratic equations for real roots by factorising, the formula or completing the square.

Lessons

  • Solving quadratic equations

    35 min

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Sample question

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

Solving quadratic equations: sample question

1 mark

Find the positive root of x2+3x−40=0x^2 + 3x - 40 = 0.

Complete: x = …

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

Turn Solving quadratic equations into a strength.

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