Tubuai was annexed by France in 1881.
Tubuai is portrayed as an island of cannibals in one of the movie versions of Mutiny on the Bounty.
... we add the 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 ...