2026 IGCSE Additional Mathematics May/June 0606/23 Q3

2026 IGCSE Additional Mathematics May/June 0606/23 Q3

5 marks
  1. Expand \((1+2x)(1-2x)\).[1]
  2. Hence find the coefficient of \(x^5\) in the expansion of \((1+2x)^{10}(1-2x)^{12}\).[4]

Solution:

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Answer:(a) \(1-4x^2\) (b) \(-2880\).

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