Chapter 16
Reining in Radical and Absolute Value Equations
A radical equation contains at least one term that's a square root, cube root, or some other root. When solving radical equations, you apply a method that's effective but comes with a built-in error possibility; you may find (and need to recognize) extraneous solutions. You need to rewrite absolute value equations to solve them. The solutions of the rewrites are then the solutions of the original equation.
The Problems You'll Work On
Here's just a sampling of the radical things you work on in this chapter:
What to Watch Out For
Here are a few things that may rock your boat, so be on the lookout:
Solving Basic Radical Equations
686–689 Solve each radical equation by squaring both sides.
686.
687.
688.
689.
Checking for Extraneous Roots
690–697 Solve the radical equations by squaring ...
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