Fractional Exponents

In this lesson, we will consider xⁿ, where n is a fraction and x is a fraction.

Let us first consider fractional exponents of the form:

In general, we define:

A number x is the n^th root of a number y if xⁿ = y.

Example:

Evaluate the following:

Solution:

We will now consider fractional exponents of the form:

In general, we define:

Example:

Evaluate the following:

Solution:

The following video gives more examples of fractional exponents:

 

 

 

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Useful Links:
Exponents - Math.com