Australia:
Belgium:
Canada:
Czech Republic:
Finland:
France:
Germany:
Hong Kong:
Japan:
Netherlands:
New Zealand:
Portugal:
Puerto Rico:
Sweden:
Switzerland:
United Kingdom:
United States:
... square roots of both sides yields <math>x+\frac{b}{2a}=\frac{\pm\sqrt{b^2-4ac}}{2a}.</math> Subtracting b/(2a) from both sides, w ...