Write x2−8x+7x^2 - 8x + 7x2−8x+7 in the form a(x+b)2+ca(x + b)^2 + ca(x+b)2+c where aaa, bbb, and c c\,c are integers.
Hence, or otherwise, write down the coordinates of the turning point of the graph of y=x2−8x+7y = x^2 - 8x + 7y=x2−8x+7
250 exam-style questions on OCR GCSE Maths Completing the Square. Each one has a worked solution and a mark scheme showing where the marks go.