Question 1180425
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According to Vieta's theorem, the product of the roots (-3) and 1 is equal to  {{{9/a}}} :

    (-3)*1 = {{{9/a}}}.

It gives  a = {{{9/(-3)}}} = -3.



According to Vieta's theorem (again), the sum of the roots (-3) and 1 is equal to {{{-b/a}}} : 

    (-3 + 1) = {{{-b/a}}},  or

       -2 = {{{-b/(-3)}}},


which gives  -b = (-2)*(-3) = 6,  or  b = -6.



<U>ANSWER</U>.  a = -3;  b = -6.
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