## Basic College Mathematics (9th Edition)

Published by Pearson

# Chapter 9 - Basic Algebra - 9.4 Order of Operations - 9.4 Exercises: 2

-25

#### Work Step by Step

7 – 2(9- 11)$(-2)^{3}$ Step 1: Work inside Parentheses: (9 -11) = -2 7 – 2(-2) $(-2)^{3}$ Step 2: Apply the exponent: $(-2)^{3}$ is -2 * -2 * -2 = -8 7 – 2(-2)(-8) Step 3 : Multiply from left to right : 2 *(-2) =(-4) 7 –(-4)(-8) Multiply (-4)(-8) = 32 7- (+32) Step 4: Change subtraction to addition 7 + (-32) = -25

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