The first three terms of an arithmetic series are (2x−3)(2x-3)(2x−3), (5x−2)(5x-2)(5x−2) and (10x−7)(10x-7)(10x−7) respectively.
Find the value of the constant xxx.
Find the sum of the first 25 terms of the series.
Practise Edexcel A Level Maths 3.2 Arithmetic Series with exam-style questions for A Level Maths. 38 questions, 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.