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.
Practise Edexcel A Level Old Maths The Binomial Expansion with exam-style questions for A Level Old Maths. 10 questions, matched to the Edexcel A Level Old Maths (9371) specification and written in Unit exams C1, C2, C3 and C4 plus two applied units (e.g. S1 and M1) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.