Art Deco was a movement in decorative arts[?] and architecture, deriving its name from the Exposition Internationale des Arts Décoratifs et Industriels Modernes held in Paris in 1925. It was a major style in Europe and the US during the 1930s. The term Art Deco was apparently not coined until the 1960s, and its practitioners were not working as a coherent community of stylists. It is considered to be eclectic, and influenced by a variety of different art forms, including ancient egyptian, and also later influenced by manufacturing and streamlining techniques arising from consumerism and mass production.
... 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 is the square of (x + ...