Question

Which of the following is the radical expression of a to the four ninths power

Answer 1

`\sqrt[9]{a^(4)}`

Explanation:

To convert a fraction form into a radical form you need to know that the denominator will be the root index and the numerator will be the exponent into the root. For the case of four ninths:

`a^{(4)/(9)} = \sqrt[9]{a^(4)} .`