Algebra.Com's Answer #600703 by KMST(5328)![\"\"](\"/images/stars/stars-13.gif\")  
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If  has a rational zero,
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document.write( "you should be able to use it to factor the polynomial,
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document.write( "and find the exact value of all of its real zeros.\r
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document.write( "If does not have a rational zero,
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document.write( "you could only find approximate values by guided trial and error.\r
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document.write( "If has a rational zero  , it must be that
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document.write( " is a factor of the constant term  , and
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document.write( " is a factor of the leading coefficient  .
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document.write( "Factors of are  , and .
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document.write( "Factors of are , ,  , and .
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document.write( "The possible values for are
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document.write( "-2, -1, -2/3, -1/3, -1/6, 1/6, 1/3, 2/3, 1, and 2.
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document.write( "You are expected to use synthetic division
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document.write( "(long division works too, but uses more ink)
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document.write( "to find that  is a zero.
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document.write( "(The other nine possible values are not zeros).
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document.write( "Synthetic division tells you
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document.write( "not only that  is zero for  ,
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document.write( "but also that
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document.write( " <--->
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document.write( "The other two zeros of are the zeros of  .
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document.write( "You can find if they are real zeros, and their value by solving
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document.write( " .
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document.write( "You could do that by completing the square, or by applying
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document.write( "the quadratic formula  ,
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document.write( "which gives the solutions to 
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document.write( "In this case, with  , the solutions to are
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