Question 1150333
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Since the given polynomial is of the degree 3, it has 3 roots, according to Algebra Main theorem.


The sum of these roots is equal to the coefficient at x^2, taken with the opposite sign, according to Vieta's theorem.


Thus the sum of the three roots is equal to  -1.


Then the average of the three roots is  {{{-1/3}}}.  <U>ANSWER</U>
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