note: Australia's last aircraft carrier fleet was decommissioned in 1982. The current Sydney and Melbourne are guided missile frigates, and the current Albatross is a naval base on land near Nowra[?].
... These solutions are also called the roots of the equation. The formula reads
<math>
x=\frac{-b \pm \sqrt {b^2-4ac}}{2a}
</math>
The term b2 – 4ac ...