{"appState":{"pageLoadApiCallsStatus":true},"articleState":{"article":{"headers":{"creationTime":"2016-03-26T13:42:35+00:00","modifiedTime":"2023-06-06T16:48:33+00:00","timestamp":"2023-06-06T18:01:04+00:00"},"data":{"breadcrumbs":[{"name":"Academics & The Arts","_links":{"self":"https://dummies-api.dummies.com/v2/categories/33662"},"slug":"academics-the-arts","categoryId":33662},{"name":"Math","_links":{"self":"https://dummies-api.dummies.com/v2/categories/33720"},"slug":"math","categoryId":33720},{"name":"Basic Math","_links":{"self":"https://dummies-api.dummies.com/v2/categories/33722"},"slug":"basic-math","categoryId":33722}],"title":"Working with Exponents, Radicals, & Absolute Value","strippedTitle":"working with exponents, radicals, & absolute value","slug":"a-guide-to-working-with-exponents-radicals-and-absolute-value","canonicalUrl":"","seo":{"metaDescription":"Exponents, radicals, and absolute value are mathematical operations that go beyond addition, subtraction, multiplication, and division. 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Working with Exponents, Radicals, & Absolute Value

By: Mark Zegarelli and

Updated: 06-06-2023

From The Book: Basic Math & Pre-Algebra For Dummies

Basic Math & Pre-Algebra For Dummies

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Exponents, radicals, and absolute value are mathematical operations that go beyond addition, subtraction, multiplication, and division. They are useful in more advanced math, such as algebra, but they also have real-world applications, especially in geometry and measurement.

Exponents (powers) are repeated multiplication: When you raise a number to the power of an exponent, you multiply that number by itself the number of times indicated by the exponent. For example:

7² = 7 × 7 = 49

2⁵ = 2 × 2 × 2 × 2 × 2 = 32

Square roots (radicals) are the inverse of exponent 2 — that is, the number that, when multiplied by itself, gives you the indicated value.

Absolute value is the positive value of a number — that is, the value of a negative number when you drop the minus sign. For example:

Absolute value is used to describe numbers that are always positive, such as the distance between two points or the area inside a polygon.

About This Article

This article is from the book:

Basic Math & Pre-Algebra For Dummies ,

About the book author:

Mark Zegarelli earned degrees in mathematics and English from Rutgers University. He is the founder of SimpleStep Learning, an online educational platform that teaches courses in basic concepts in ten minutes or less, keeping students engaged and learning in every moment. Mark is also author of several other successful For Dummies books.

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