Limits to Growth was a 1972 book modeling the consequences of a rapidly growing global population, commissioned by the Club of Rome. Donella Meadows was its leader author.
... = b/(2a), so 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 ...