Basic College Mathematics (9th Edition)

Published by Pearson
ISBN 10: 0321825535
ISBN 13: 978-0-32182-553-7

Chapter 9 - Basic Algebra - 9.4 Order of Operations - 9.4 Exercises - Page 655: 37

Answer

126

Work Step by Step

Step 1: Work inside parentheses first: (3 +9) = 12 4(3^2)+ 7 (12)-(-6) Step 2: Apply exponent: 3^2 = 3 * 3= 9 4(9) + 7(12) – (-6) Step 3: Multiplication and division from left to right 4 * (9) = 36 36 + 7(12) – (-6) Now multiply 7 * (12) = 84 36 + 84 – (-6) Step 4: Addition and subtraction from left to right 36 + 84 = 120 To separate a negative number from a minus sign: 120 – (-6) = 126
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