An expression written with a radical is called a radical expression. The expression written under the radical is called the radicand. Simplify radical expressions with perfect-squared radicands. For any real number a, . Find cube roots, simplifying certain expressions, and find values of cube-root expressions.
Every real number has exactly one cube root in the real number system.
The symbol represents the cube root of a. Simplifying expressions involving odd and even roots. In the expression , k is called the index of the radical expression.