The Organization for Economic Co-Operation and Development is an international financial body charged with lowering barriers to free trade, such as subsidies and tariffs, among member states. It is criticized by the anti-globalization movement as having coercive tactics that undermine national sovereignty.
... impossible 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 ...