z=m2−n22k\displaystyle z = \frac{m^2 - n^2}{2k}z=2km2−n2
m=10m = 10m=10 n=2n = 2n=2 k=6k = 6k=6
Work out the value of zzz.
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.