Western Australia is the largest state in Australia. It contains no fewer than 1224 separate Protected Areas with a total area of 17,061,020 hectares (land area: 15,915,080 hectares – 6.30% of the state’s area). 63 of these are National parks, totalling 4,874,282 hectares (1.93% of the state’s area).
... formula is derived by the method of completing the square[?].
<math>ax^2+bx+c=0</math>
Dividing our quadratic equation by a, we have
<math>
x^2 ...