Raclette is a type of cheese from Switzerland (although French variations exist). The cheese is served in a dish known simply as "Raclette" (from the French racler, "to scrape"), in which raclette cheese is melted onto potatoes, pickels[?], sliced meats, and vegetables.
... the element 2a is zero and it is impossible to divide by it.)
The symbol
<math>\pm \sqrt {b^2-4ac}</math>
in the formula should be understood as "either ...