Intermediate Algebra (12th Edition)

Published by Pearson
ISBN 10: 0321969359
ISBN 13: 978-0-32196-935-4

Chapter R - Section R.3 - Exponents, Roots, and Order of Operations - R.3 Exercises: 64

Answer

$-85$

Work Step by Step

Using order of operations, the given expression, $ -8(\sqrt{64})-(-3)(-7) ,$ simplifies to \begin{array}{l}\require{cancel} -8(\sqrt{(8)^2})-(21) \\\\= -8\cdot8-21 \\\\= -64-21 \\\\= -85 .\end{array}
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