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Cambridge IGCSE Additional Mathematics

4.3Equations reducible to quadratics

Equations reducible to quadratics in Cambridge IGCSE Additional Mathematics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic20 practice questions1 lesson

Learning objectives

What the syllabus expects you to be able to do.

  1. 4.3Use a substitution to form and solve a quadratic equation in order to solve a related equation.

Lessons

  • Equations reducible to quadratic form

    35 min

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Sample question

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

Equations reducible to quadratics: sample question

1 mark

Solve 2x+x−3=02x + \sqrt{x} - 3 = 0.

Complete: x = …

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

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