Express x2+9x+3x^2 + 9x + 3x2+9x+3 in the form (x+a)2+b(x + a)^2 + b(x+a)2+b and state the coordinates of the minimum point of the curve y=x2+9x+3y = x^2 + 9x + 3y=x2+9x+3
211 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.