exam Maths Puzzle Numerical Ability

Find the vertex for the graph of the quadratic function.
f(x) = x^2 - 11

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Hi!
Does anybody out there know the answer to this question:
I am making a web page on my IT class. I do it on notepad in Microsoft Word in text and save it as html. By my c Divide: (2x^3 - x^2 + 3x - 1) / (x + 2)