Tasmania may be the smallest state in Australia, but it contains no fewer than 495 separate Protected Areas with a total area of 2,203,383 hectares (land area: 2,201,962 hectares – 32.23% of the state’s area). 19 of these are National parks, totalling 1,430,762 hectares (20.94% of the state’s area).
... 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 ...