North Ayrshire
Orkney
Perth and Kinross
Shetland Isles[?]
Stirling
The Borders[?]
Western Isles
... we get <math>x=\frac{-b}{2a}\pm\frac{\sqrt{b^2-4ac}}{2a}=\frac{-b\pm\sqrt{b^2-4ac}}{2a}.</math> Generalizations The formula and its proof remain ...