The simplest form of the expressions as they are given is given as 1/81 and 81 respectively.
The term indices comprises of two parts when we write it; the base and the index. The base is raised to the power of the index.
In this case we are asked to simplify two expressions;
1) (1/3)^4 = 1^4/3^4 = 1/81
2) (1/3)^-4 = 1/1^4/3^4 = 1/1/81 = 81
Thus, the simplest form of the expressions as they are given is given as 1/81 and 81 respectively.
Learn more about indices:https://brainly.com/question/10563917
#SPJ1