Algebra 1: Common Core (15th Edition)

Published by Prentice Hall

Chapter 1 - Foundations for Algebra - 1-2 Order of Operations and Evaluating Expressions - Practice and Problem-Solving Exercises - Page 13: 31

Answer

$496$

Work Step by Step

Substituting $s=4$ and $t=8$, the given expression, $2st^2-s^2 ,$ evaluates to \begin{array}{l}\require{cancel} 2(4)(8)^2-(4)^2 \\\\= 2(4)(64)-16 \\\\= 8(64)-16 \\\\= 512-16 \\\\= 496 .\end{array}

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