P=mn+12kn2\displaystyle P = mn + \frac{1}{2}kn^2P=mn+21kn2
m=−6m = -6m=−6 k=8k = 8k=8 n=2n = 2n=2
Work out the value of PPP.
108 exam-style questions on Edexcel GCSE Maths Substitution. Each one has a worked solution and a mark scheme showing where the marks go.