Just some help with index notation

[geffman1]

Homework Statement

hey just wondering if anyone could show the the working for the index notation in the attachment it would be greatfully appreciated. thanks. the answer is there I am just looking for the working.

Homework Equations

The Attempt at a Solution

 

[Mark44]

These aren't indexes--they are exponents. Review the laws of exponents, particularly these two:
(a^p)^q

\frac{a^p}{a^q}