Find the first 3 terms, in ascending powers of xxx, of the binomial expansion of
(2+kx)7 (2 + kx)^7 (2+kx)7where k k\,k is a constant. Give each term in its simplest form.
Given that the coefficient of x2 x^2\,x2 is 6 times the coefficient of xxx, find the value of kkk.
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.