Write 3x2−30x+633x^2 - 30x + 633x2−30x+63 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=3x2−30x+63y = 3x^2 - 30x + 63y=3x2−30x+63
Practise Oxford AQA IGCSE Maths Completing the Square with exam-style questions for Core and Extended tier. 14 questions, matched to the Oxford AQA IGCSE Maths (9260) specification and written in Paper 1 and Paper 2 (Core: 1C and 2C; Extension: 1E and 2E) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.