A-Level CAIE Mathematics A2 3.1.5—Binomial expansion Question Bank

• use the expansion of (1 + x)n, where n is a rational number and x 11. Finding the general term in an expansion is not included. Adapting the standard series to expand e.g. x2 2 1 1 - - `j is included, and determining the set of values of x for which the expansion is valid in such cases is also included.