Additional Mathematics (4037) Topic 2 · Quadratic functions 2.1 Completing the square, maxima and minima Key ConceptsLearn FirstLoading… Key FormulasKnow TheseLoading… Common MistakesAvoid TheseLoading… StrategyApply ThisLoading…4037-SUB-2.1-1Non-CalculatorLoading… 4037-SUB-2.1-2CalculatorLoading…