z=5w2−40z = 5w^2 - 40z=5w2−40
Work out the value of z z\,z when w=4w = 4w=4
Practise Edexcel GCSE Maths Substitution with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Maths (1MA1) 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.