Determine the least value of 2x2+12x+232x^2+12x+232x2+12x+23 and the value of x x\,x at which it occurs.
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Markscheme
1.4.3 Completing the square for a quadratic curve Questions
8 exam-style questions on OCR (MEI) A Level Maths 1.4.3 Completing the square for a quadratic curve. Each one has a worked solution and a mark scheme showing where the marks go.