Express 2x2+12x−12x^2+12x-12x2+12x−1 in the form a(x+b)2+ca(x+b)^2+ca(x+b)2+c.
8 exam-style questions on CCEA A Level Maths 1.1.5 Algebra and functions. Each one has a worked solution and a mark scheme showing where the marks go.