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CAIE IGCSE Mathematics Extended E1.18.2 Rationalise the Denominator Questions

Work through Extended CAIE IGCSE Mathematics rationalisation questions by multiplying by a matching root or conjugate and simplifying.

Syllabus
2028–2030
Course
Mathematics 0580
Level
Extended

Exam points

  • rationalise a denominator containing a single square root
  • use a conjugate factor to rationalise denominators with two terms
  • simplify the resulting surd expression to its simplest form

CAIE IGCSE Mathematics Extended E1.18.2 Rationalise the Denominator Questions question 1

[Maximum number: 2]

Rationalise the denominator.
17+2\frac{1}{\sqrt7+2}

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