Find the first 4 terms of the expansion of (1+x2)10\displaystyle \left(1 + \frac{x}{2}\right)^{10}(1+2x)10 in ascending powers of xxx, giving each term in its simplest form.
Use your expansion to estimate the value of (1.005)10(1.005)^{10}(1.005)10, giving your answer to 5 decimal places.
10 exam-style questions on Edexcel A Level Old Maths The Binomial Expansion. Each one has a worked solution and a mark scheme showing where the marks go.