The Kroller-Muller Museum[?], named after Helene Kroller-Muller, is situated nearby and has a considerable collection of Vincent van Gogh paintings.
... 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 ...