(2x+23)(2x + 23)(2x+23), (8x+2)(8x + 2)(8x+2) and (20x−52)(20x - 52)(20x−52) are three consecutive terms of an arithmetic sequence.
Prove that the common difference of the sequence is 12
Practise Oxford AQA IGCSE Maths Sequences (Higher) with exam-style questions for Core and Extended tier. 4 questions, matched to the Oxford AQA IGCSE Maths (9260) specification and written in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) 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.