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CAIE IGCSE Additional Math 2.4 solve quadratic equations

Use this quadratic-equations page to factorise, use exact formula methods and follow through from earlier algebra to solve related equations.

Syllabus
2028–2030
Course
Additional Mathematics 0606

Exam points

  • Solve quadratic equations exactly by factorising or using a formula method.
  • Give roots in exact surd form when the question forbids calculator decimals.
  • Use an earlier result to solve a related quadratic in a substituted variable.

2.4. Solve quadratic equations question 1

[Maximum number: 2]

The number of permutations of n items taken 4 at a time is equal to 16×\frac{1}{6} \times the number of permutations of 2 n items taken 3 at a time.

Hence find the value of n.

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