Show that the first three terms, in descending powers of xxx, of the expansion of (3x−2)8(3x - 2)^8(3x−2)8 are given by 6561x8+ax7+bx66561x^8 + ax^7 + bx^66561x8+ax7+bx6 where aaa and bbb are integers to be found.
Find the constant term in the expansion of (3x−2x)8\left(3x - \frac{2}{x}\right)^8(3x−x2)8
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.