Question

Which is equivalent to ? please wait till i add my picture

Answer 1

One of the indicies rules is:
${a}^{ \frac{m}{n} } = \sqrt[n]{ {a}^{m} }$
As you "root the bottom and power the top"
Using this format, we can see that 3rdrt8^x can be written as 8^x/3
By the way, 3rdrt8 means 3rd root of 8