Concept explainers
a.
To find: the values of
a.
Answer to Problem 37WE
Explanation of Solution
Concept Used:
While solving the expressions, first perform the operations within the grouping symbol. Then start from the left and perform the multiplication or division as it appears in the expression on going towards right. After that again start from the left and perform the additions or subtractions as it appears in the expression on going towards right.
Consider the expression,
First perform the subtraction within the parenthesis:
Now consider the expression,
First perform the subtraction within the parenthesis:
b.
To explain: is the subtraction of real numbers associative.
b.
Answer to Problem 37WE
No
Explanation of Solution
No, the subtraction of real numbers is not associative.
As for subtraction of real numbers to be associative, it must be true that for the real numbers a, b and c ,
To prove the claim that the subtraction of real numbers is not associative, consider the counter example from part (a).
As shown in part (a),
So, clearly
Hence, subtraction of real numbers is not associative.
Chapter 2 Solutions
Algebra: Structure And Method, Book 1
Additional Math Textbook Solutions
Introductory Statistics
A First Course in Probability (10th Edition)
Pre-Algebra Student Edition
Calculus: Early Transcendentals (2nd Edition)
College Algebra with Modeling & Visualization (5th Edition)
- Algebra and Trigonometry (6th Edition)AlgebraISBN:9780134463216Author:Robert F. BlitzerPublisher:PEARSONContemporary Abstract AlgebraAlgebraISBN:9781305657960Author:Joseph GallianPublisher:Cengage LearningLinear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
- Algebra And Trigonometry (11th Edition)AlgebraISBN:9780135163078Author:Michael SullivanPublisher:PEARSONIntroduction to Linear Algebra, Fifth EditionAlgebraISBN:9780980232776Author:Gilbert StrangPublisher:Wellesley-Cambridge PressCollege Algebra (Collegiate Math)AlgebraISBN:9780077836344Author:Julie Miller, Donna GerkenPublisher:McGraw-Hill Education