Warning: Wikipedia contains spoilers
Vairė is a Vala. She is the wife of Mandos, and is responsible for weaving the story of the World.
... 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 square; it ...