text: ## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)
  
  Published by Pearson
  
  # Chapter 4 - Polynomials - 4.1 Exponents and Their Properties - 4.1 Exercise Set: 61
  
  #### Answer
  
  $t^{80}$
  
  #### Work Step by Step
  
  Using $(a^x)^y=a^{xy}$, then the given expression, $(t^{20})^{4}$, simplifies to \begin{array}{l}\require{cancel} t^{20(4)} \\\\= t^{80} .\end{array}
  
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