Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 5 - Number Theory and the Real Number System - 5.2 The Integers; Order of Operations - Exercise Set 5.2 - Page 271: 148

Answer

The parentheses are included as \[8-2\cdot \left( 3-4 \right)\].

Work Step by Step

Insert the parentheses as given below to obtain the required result: \[8-2\cdot \left( 3-4 \right)\] Now, evaluating the above expression using order of operations as: \[\begin{align} & 8-2\cdot \left( 3-4 \right)=8-2\cdot \left( -1 \right) \\ & =8+2 \\ & =10 \end{align}\] Hence, the parentheses are included as \[8-2\cdot \left( 3-4 \right)\].
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