In Greek mythology, Lotis was a nymph, daughter of Poseidon. Priapus tried to rape her and she was changed into a lotus tree to escape him. Later, Dryope picked a flower off the tree Lotis had become, and was transformed into a lotus herself.
... 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 square; it is the square of (x + ...