Algebra I Workbook For Dummies (For Dummies (Math & Science)) by Sterling Mary Jane

Author:Sterling, Mary Jane [Sterling, Mary Jane]
Language: eng
Format: epub
ISBN: 9781119348962
Publisher: Wiley
Published: 2017-03-17T04:00:00+00:00

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Chapter 15

Reeling in Radical and Absolute Value Equations

IN THIS CHAPTER

Squaring radicals once or twice (and making them nice)

Being absolutely sure of absolute value

Checking for extraneous solutions

Radical equations and absolute values are just what their names suggest. Radical equations contain one or more radicals (square root or other root symbols), and absolute value equations have an absolute value operation (two vertical bars that say to give the distance from 0). Although they’re two completely different types of equations, radical equations and absolute value equations do have something in common: You change both into linear or quadratic equations (see Chapters 12 and 13 ) and then solve them. After all, going back to something familiar makes more sense than trying to develop (and then remember) a bunch of new rules and procedures.

What’s different is how you change these two types of equations. I handle each type separately in this chapter and offer practice problems for you.

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