Simplify the following algebraic expression and express your answer using positive exponents only. 
Definitions:
Inferential Statistics
Statistical methods that allow researchers to make inferences or generalizations about a population based on a sample.
Representative Sample
A subset of a population that accurately reflects the members of the entire population.
Effect Size
A quantitative measure of the magnitude of a phenomenon, used to indicate the size of an experimental effect.
Independent Variable
The variable in an experiment that is manipulated or changed to observe its effect on the dependent variable.
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