Verify that 2x2−x−1=(2x+1)(x−1)2x^2 - x - 1 = (2x+1)(x-1)2x2−x−1=(2x+1)(x−1)
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.