Solve 5x2+(k−40)x−8k=05x^2 +(k-40)x - 8k = 05x2+(k−40)x−8k=0 in terms of kkk.
223 exam-style questions on OCR GCSE Maths Factorising Harder Quadratics. Each one has a worked solution and a mark scheme showing where the marks go.