A=2j−jkA = 2j - jkA=2j−jk
Work out the value of A A\,A when j=7j = 7j=7 and k=3k = 3k=3
Practise Edexcel IGCSE Maths Substitution with exam-style questions for IGCSE Maths. 27 questions, matched to the Edexcel IGCSE Maths (4MA1) specification and written in Paper 1 and Paper 2 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.