Rational Expressions
      Multiplication and division of rational expressions
      Solving complex rational expressions
Multiplication and division of rational expressions
Use the formulas for the multiplication and the division of fractions.
  and  
Notice the two special cases of which should be aware of:
  and  
Examples:  Perform the indicated operations and reduce the answer to lowest terms.




proof
Note, since each second line should be subtracted, the sign of each term is reversed.
Solving complex rational expressions
A complex or compound rational expression has fractional expressions in its numerator, denominator or both.
To simplify complex fractions, change the complex fraction into a division problem, i.e., divide the numerator by the denominator.
Examples:  Simplify complex fractions.
Pre-calculus contents A
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