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Example 4

Simplify the rational expression .
  1. Rewrite the division problem as a multiplication problem, using the reciprocal of the divisor.
  2. Identify any invalid values of the rewritten expression.
  3. Check for factors that may cancel, then multiply the terms of the rewritten expression.
This applet is provided by Walch Education as supplemental material for their mathematics programs. Visit www.walch.com for more information.