Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter R - Review of Basic Concepts - Chapter R Test Prep - Review Exercises - Page 83: 43



Work Step by Step

Evaluate using the PEMDAS rule for order of operations. The PEMDAS rule summarizes the order of operations: First Priority; P - parentheses Second Priority: E - exponents Third Priorirty: M/D - multiplication or division, whichever comes first from the left Fourth Priority: A/S - addition or subtraction, whichever comes first from the left Simplify within grouping symbols first:: $=(-5)(-8)-2^3$ Next, apply the exponent to obtain: $=(-5)(-8)-8$ Multiply: $=40-8$ Subtract: $=\color{blue}{32}$
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