With a radical sign, the index indicates the degree of the root.

The number under a radical sign.

The radical sign is a symbol used to indicate a root.

An expression of the form with a radical and radicand.

Taking the radicands factors that are the same.

In a radical expression, an index of 3 means cube root.

An expression of the form a(m/n) Base and a fraction exponent.

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Rational Exponents

Algebra 7.3 vocabulary

Term	Definition
Index	With a radical sign, the index indicates the degree of the root.
Radicand	The number under a radical sign.
Radical sign	The radical sign is a symbol used to indicate a root.
Radical form	An expression of the form with a radical and radicand.
Square root	Taking the radicands factors that are the same.
Cube root	In a radical expression, an index of 3 means cube root.
Exponential form	An expression of the form a(m/n) Base and a fraction exponent.