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).
... square of b/(2a) to both sides, getting
<math>x^2+\frac{b}{a}x+\frac{b^2}{4a^2}=-\frac{c}{a}+\frac{b^2}{4a^2}.</math>
The left side is now a perfect ...