Watch the Multiplying and Dividing Rational Expressions 3 video to see another example of dividing.

Complete the following questions related to this video.

Hold your mouse over the following expressions to verify your answers.

If you have any difficulty with these solutions, please contact your teacher before continuing.


  1. The question in this video begins with "Divide and express as a simplified rational. State the domain."


    1. Explain how you know when the rational expression is simplified.
      A rational expression is simplified when the numerator and denominator do not have any common factors.


    2. Explain what is meant by word domain in this video.
      Domain refers to all «math style=¨font-family:`Times New Roman`¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»x«/mi»«/math» values for which the rational expression is defined. For a rational expression, the domain is all numbers except the non-permissible values, which is why you must write the non-permissible values as part of the solution.


    3.  
      What additional word does the narrator use when referring to the domain?
      He uses the word constraints, which is another word for non-permissible values.