Piggly-wiggly[?] - Claims to be the first supermarket. Motto: "Piggly-Wiggly All Over the World". One rival entrepreneur opened a store: "Hoggly-Woggly Only One in the World".
... of characteristic 2, 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 ...