\"\"

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The equation is \"\".

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Graph the related function \"\"\"\"

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \
      a \

 f(a)

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\"minus

\ 		\"\" 
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\"minus

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\"\"

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\"\"

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\"\"

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\"\"

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\"\"

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\"\"

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\"\"

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\"\"

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Graph:

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\"\"

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\"\"

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The a-intercepts are  between \"\" and \"\".

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So,the root is between  \"\" and \"\".