Rationalizing a Denominator using a Conjugate

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Taught by muchomath
  • Currently 4.0/5 Stars.
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Meets NCTM Standards:
Lesson Description:

Learn to rationalize the denominator of a fraction with a radical in it by using a conjugate.

Created by and copyright of Larry Perez. Funded by the state of California through Saddleback College. More information on videos, resources, and lessons at Algebra2Go.

Questions answered by this video:
  • How do you rationalize a denominator?
  • What does it mean to rationalize the denominator of a fraction?
  • How do you rationalize a denominator using a conjugate?
  • How do you rationalize the denominator of sqrt(2)/(4 + sqrt(10))?
  • What is the conjugate of 4 + sqrt(10)?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson shows you how to find the conjugate of a radical expression and then use the conjugate to rationalize the denominator of a fraction involving radicals. Each step is explained and written out.