7.6 Solving Radical Equations

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7.6 Solving Radical Equations

• p.437

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Ex Solve for x.
Dont forget to check your solutions!!

Use this idea to solve the radical equations.
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Ex Solve for y.
Dont forget to check your solutions!!
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Ex Solve.
Dont forget to check your solutions!!
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Ex Solve.
Dont forget to check your solutions!!
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Ex Solve.
Only use the positive answers when checking
solutions.
Factor this to solve!
Dont forget to check your solutions!!
Solution
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So, why didnt one of the solutions work?

• The solution that did not work is called an
  extraneous solution.
• An extraneous solution is a false solution.
• This is the reason why you MUST check all
  solutions!!

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Assignment