Question 998854
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{{{3x^2 - 4x - 7}}} = {{{0}}},


{{{x[1,2]}}} = {{{(4 +- sqrt(4^2 + 4*3*7))/6}}} = {{{(4 +- 10)/6}}}.


{{{x[1]}}} = {{{14/6}}} = {{{7/3}}}.


{{{x[2]}}} = {{{-1}}}.


The sum of reciprocals of the roots is {{{3/7}}} + {{{(-1)}}} = {{{-4/7}}}.