The equation x2−5x+6.25=0x^2 - 5x + 6.25 = 0x2−5x+6.25=0. Verify that the equation has repeated roots.
322 exam-style questions on Edexcel A Level Maths Quadratics, covering 2.1 Solving Quadratics, 2.2 Completing the Square, 2.3 Sketching Quadratic Graphs, 2.4 The Discriminant, and 2.5 Modelling with Quadratics. Each one has a worked solution and a mark scheme showing where the marks go.