Really sorry for asking so many questions but my test is about to begin and I'm running into quite a few problems on my review...

This time, it is rational exponents.

Attachment 23750

The answer is apparently:

Attachment 23749

**I don't know where they got 23/3 from. I know the 56 is from 7*8, but that's pretty much all I could understand? Multiplying the exponents always gives me an 8. Mind telling me what I'm doing wrong? Might it be a typo?

Thank You,

Azusa.