Write 1(1+x)2\displaystyle \frac{1}{(1+x)^2}(1+x)21 in the form (1+x)n(1+x)^n(1+x)n.
Work out the first four terms, in ascending powers of xxx, in the binomial expansion of 1(1+x)2\displaystyle \frac{1}{(1+x)^2}(1+x)21
408 exam-style questions on Edexcel A Level Maths Binomial Expansion, covering 4.1 Expanding (1 + x)^n, 4.2 Expanding (a + bx)^n, and 4.3 Using Partial Fractions. Each one has a worked solution and a mark scheme showing where the marks go.