Question

Someone please help me

Answer 1

Answer:

$b^{\frac{4}{9}}$

Step-by-step explanation:

The definition of a rational exponent:

$a^{\frac{m}{n}} = \sqrt[n]{a^m} = (\sqrt[n]{a})^m$

A quantity is raised to an exponent that is a fraction. A fractional exponent is a root. The denominator of the fraction is the index of the root. The numerator of the fraction is an exponent.

Here you just work backwards. 9 is index of the root, so it becomes the denominator of the fractional exponent. 4 is an exponent, so it becomes the numerator of the fractional exponent. b is in the root, so b is the quantity raised to the fractional exponent.

$\sqrt[9]{b^4} = b^{\frac{4}{9}}$

Answer 2

Answer:

${b}^{ \frac{4}{9} }$

Step-by-step explanation:

$\huge \sqrt[9]{ {b}^{4} } = {b}^{ \frac{4}{9} }$