Business Valuation For Dummies
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A square root is the most common root operation. A root is the inverse operation of an exponent (which means that it undoes an exponential operation), and so a square root is an operation that undoes an exponent of 2. For example,

You can read the symbol either as “the square root of” or as “radical.” So, read

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as either “the square root of 9” or “radical 9.”

As you can see, when you take the square root of any square number, the result is the number that you multiplied by itself to get that square number in the first place. For example, to find

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you ask the question, “What number when multiplied by itself equals 100?” The answer in this case is 10, because

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About This Article

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About the book authors:

Lisa Holton is a former business editor and reporter for the Chicago Sun-Times. Today, she heads The Lisa Company, a writing, editing, and research firm. She's a writer for corporations, colleges, and nonprofits nationwide, and has written more than 13 books. Jim Bates is vice president, transaction support for the Christman Group, a middle-market investment banking firm based in Palatine, Illinois.

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