Write x2−2x−1x^2 - 2x - 1x2−2x−1 in the form (x+a)2+b(x + a)^2 + b(x+a)2+b where a a\,a and b b\,b are integers.
Hence, or otherwise, write down the coordinates of the turning point of the graph of y=x2−2x−1y = x^2 - 2x - 1y=x2−2x−1
14 exam-style questions on Oxford AQA IGCSE Maths Completing the Square. Each one has a worked solution and a mark scheme showing where the marks go.