2025 IGCSE 0580 May/June P22 Q18

2025 IGCSE 0580 May/June P22 Q18

4 marks
  1. \(\dfrac9{\sqrt3}\)
    Rationalise the denominator.
    Give your answer in its simplest form.[2]
  2. \((5-\sqrt2)(1+3\sqrt2)=c+k\sqrt2\)
    Find the value of \(c\) and the value of \(k\).[2]

Solution:

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Answer:(a) \(3\sqrt3\). (b) \(c=-1,\ k=14\).

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