Putnam County, Florida(It is not certain as to whether this one was named for Israel Putnam. There is also a possibility that it was named forBenjamin A. Putnam, an officer in the Seminole War and local Florida politician.)
... to divide by it.)
The symbol
<math>\pm \sqrt {b^2-4ac}</math>
in the formula should be understood as "either of those element(s) of the field who ...