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INSTRUCTORSCarleen EatonGrant Fraser
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For more information, please see full course syllabus of Algebra 2
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Lecture Comments (1)

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Post by Mark Mccraney on January 5, 2010

Rad. equ. lect. x-3=100, x is 103, NOT 97

Solving Radical Equations and Inequalities

  • To solve a radical equation, raise both sides of the equation to the power equal to the index of the radical. This will eliminate at least one radical. If a radical remains in the new equation, repeat the process.

  • Always check for extraneous solutions – values for which one or more radicals in the original equation have a negative radicand. Exclude such values from the solution set.

Solving Radical Equations and Inequalities

Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.

  • Intro 0:00
  • Radical Equations 0:23
    • Examples
  • Example: Radical Equation 4:47
  • Extraneous Roots 12:29
  • Eliminating nth Roots 14:28
    • Examples
  • Radical Inequalities 16:38
    • Example
  • Lecture Example 1 20:28
  • Lecture Example 2 22:57
  • Additional Example 3
  • Additional Example 4