Find the first 4 terms, in ascending powers of xxx, of the binomial expansion of (3−4x)7(3 - 4x)^7(3−4x)7 giving each term in simplest form.
This expansion is to be used to find an approximation for 2.9672.96^72.967. State the value of xxx that should be used. (There is no need to carry out this calculation.)
Practise Edexcel A Level Maths Binomial Expansion with exam-style questions for A Level Maths. 100 questions covering 4.1 Expanding (1 + x)^n, 4.2 Expanding (a + bx)^n, and 4.3 Using Partial Fractions, matched to the Edexcel A Level Maths (9MA0) specification and written in Paper 1, Paper 2 and Paper 3 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.