Question 21 — IGCSE 0580 Oct/Nov 2025 Paper 21
Cambridge IGCSE Mathematics 0580, Extended tier, non-calculator. Topic: Numbers · The four rules. Worth 4 marks.
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Question text
21 (a) `3- 5j`2+3 5j= a+b 5
Find the value of a and the value of b.
a = ................................................
b = ................................................
[2]
(b) Rationalise the denominator.
W rite your answer in its simplest form.
6
2
................................................. [2]
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