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Example 4

Simplify the rational expression . Note: If values show up as "undefined," try clicking the Original Problem button at the end of the applet. Then, move the slider to step through the problem.
  1. Identify any invalid values of the expression.
  2. Find a common denominator.
  3. Rewrite each term of the expression using the new denominator.
  4. Check to see if the result can be written in a simpler form.
This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit www.walch.com for more information.