Easy -1.2 This is a straightforward completing the square exercise requiring only factoring out the coefficient of x², completing the square, and simplifying. It's a standard textbook drill with no problem-solving element, making it easier than average but not trivial since students must handle the coefficient 2 correctly.
1 Express $2 x ^ { 2 } - 12 x + 7$ in the form $a ( x + b ) ^ { 2 } + c$, where $a , b$ and $c$ are constants.
\hfill \mbox{\textit{CAIE P1 2015 Q1 [3]}}