Expand and simplify (5a−1)(2a−k)(5a - 1)(2a - k)(5a−1)(2a−k), giving your answer in terms of kkk.
Factorise b2−144b^2 - 144b2−144
255 exam-style questions on Eduqas GCSE Maths Expanding and Factorising Quadratics. Each one has a worked solution and a mark scheme showing where the marks go.