Question 390065
The discriminant of the function (i.e. {{{b^2 - 4ac}}}) must be nonnegative. Substituting a = 3, b = k, c = 2 in:


{{{k^2 - 4(3)(2) >= 0}}}


{{{k^2 >= 24}}}


{{{k >= 2sqrt(6)}}} or {{{k <= 2sqrt(6)}}} (k can take on any of these values)