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Write $2x^2 - 12x + 7$ in the form $a(x + b)^2 + c$, where $a$, $b$ and $c$ are constants.
Mathematics 9709 · AS & A Level · Quadratics
Quadratics — practice question
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “A correct completion of the square leading to $2(x-3)^2-11$ (or equivalent with coefficients $a=2,b=-3,c=11$)” …
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