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Exam (elaborations)
MATH 021 Introductory Algebra
Unit 1: Mathematical Expressions 
1.1 Problem Solving and Numerical Representations 
Introduction 
Everyone must have felt at least once in his or her life how wonderful it would be if we could 
easily solve a problem using one method that works every time. Problem solving can be 
challenging, and there are no universal approaches one can take to solving problems. Basically 
one must explore possible methods until recognizing the path to a solution. Guessing can help, 
and algebraic thinking...
Other
MATH 021 introductory algebra third edition Third Edition
PopularMATH 021 Introductory Algebra 
Third Edition 
September 1, 2019 
Brookdale Community College Mathematics Department 
Development Team 
Editors: 
Barbara Tozzi, Ed.D. 
Linda C. Wang 
Pilot Instructors/Reviewers: 
Karina Aliaga 
Nathalie Darden 
Sally Mulvey 
Linda C. Wang 
Arminda Wey 
Introductory Algebra by Brookdale Community College is licensed under a 
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Unported License. 
Cover photo of Machu Picchu by Yung-Terng (Y.T.) Wang
Exam (elaborations)
MATH 021 introductory algebra third edition
This text was created by 
The Brookdale Community College Mathematics Department 
Under a Creative Commons License and was 
remixed by Barbara Tozzi, Ed.D. and Linda C. Wang