Express x2+5x−2x^2 + 5x - 2x2+5x−2 in the form (x+a)2+b(x + a)^2 + b(x+a)2+b, where a a\,a and b b\,b are constants to be found.
63 exam-style questions on AQA A Level Maths 1.5.3 Quadratic functions. Each one has a worked solution and a mark scheme showing where the marks go.