Work out the first four terms, in ascending powers of xxx, in the binomial expansion of 1(1+x)3\displaystyle \frac{1}{(1+x)^3}(1+x)31
12 exam-style questions on Edexcel A Level Maths 4.1 Expanding (1 + x)^n. Each one has a worked solution and a mark scheme showing where the marks go.