Find the first four terms, in ascending powers of xxx, of the binomial expansion of
116+x\displaystyle \frac{1}{\sqrt{16 + x}}16+x1
giving each coefficient in its simplest form.
Write down the range of values of x x\,x for which the expansion is valid.
144 exam-style questions on AQA A Level Maths 1.7.1 Binomial expansion. Each one has a worked solution and a mark scheme showing where the marks go.