New South Wales contains 549 separate Protected Areas with a total land area of 4,953,271 hectares (6.18% of the state’s area). 150 of these are National parks, totalling 4,172,308 hectares (5.21% of the state’s area).
... details.
Derivation
The quadratic formula is derived by the method of completing the square[?].
<math>ax^2+bx+c=0</math>
Dividing our quadratic ...