# Radicals

A radical expression is created using the opening (dots 345) and closing (dots 12456) radical symbols. When the opening radical symbol is supplied, the equation editor creates a square root expression and supplies the closing radical symbol. It will also provide a place for typing the radicand between the opening and closing radical symbols.

Typing the closing radical symbol will move the equation editor input to the position just after (outside) the radical.

A radical with an index, such as a cube root, is created with the general radical indicator (dots 126), followed by the index of the root, followed by the opening radical indicator (dots 345) and then the expression under the radical.

## Exercises

Type the following expressions into the equation editor below and verify that the equation editor produces the proper Nemeth braille output in each case. Also verify that a sighted friend can read each expression you have typed as it is displayed on the screen. Feel free to try your own examples, and to explore other combinations of radical expressions, with expressions both inside and outside the radical.

- square root of x
- square root of (x + y)
- three times the square root of x
- cube root of x
- square root of cube root of x