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1-23.

Use the Zero Product Property to solve for .

  1.  

    Set each factor equal to , then solve for .

    or

  1.  

    Refer to part (a).

  1.  

    Refer to part (a).

    or

  1.  

    Factor the problem first, then set each factor equal to and solve for .

    or

  1.  

    Remember to factor first.

  1.  

    Remember to factor first.