Which expression shows how to write.. (please help me with this!!)

Answer:
[tex]3^4*3^4[/tex]
Step-by-step explanation:
Well the simple definition of an exponent is: [tex]x^c=x*x*x*x...\text{ c amount of times}[/tex]
So when we have: [tex](3^4)^2[/tex]
This just means: 3^4, times it self, 2 times.
This can be expressed as: [tex]3^4*3^4[/tex]