 Assigning a value to \(y\), we have \(x^2 = \pm ax \pm b^2\), and therefore \(x\) can be found with ruler and compasses, by a method [for constructing roots] already explained. If then we should take successively an infinite number of different values for the line \(y\), we should obtain an infinite number of values for the line \(x\), and therefore an infinity of different points, such as C, by means of which the required curve can be drawn (G, 34).