# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2012 | May-Jun | (P1-9709/11) | Q#2

Hits: 450 Question Find the coefficient of in the expansion of . Solution First rewrite the given expression in standard form. Expression for the Binomial expansion of is: In the given case: Hence; Hence the coefficient of is .