# Past Papers’ Solutions | Cambridge International Examinations (CIE) | AS & A level | Mathematics 9709 | Pure Mathematics 1 (P1-9709/01) | Year 2016 | Oct-Nov | (P1-9709/13) | Q#2

Hits: 167 Question The coefficient of in the expansion of is 100. Find the value of the constant a. Solution We can find the coefficient of in the expansion of given expression by finding coefficients of in the expansion of individual terms of expression and then adding them. Let us first find the coefficient of in the expansion of . […]