College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.2 - Page 34: 123

Answer

To raise a number to a power, n, is to multiply the number by itself n times. -5$^2$ can be rewritten as -(5$\times$5) meaning that 5$^2$ is being negated. (-5)$^2$ can be rewritten as (-5)(-5) meaning that (-5) is being multiplied by itself.

Work Step by Step

Use the definition of exponents and parenthesis to explain what it means to raise a number to a power and the importance parenthesis in your own words.
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