Question 1033715
1:
Use polynomial division and the other quadratic factor will be the quotient of this division.  Factorize this if possible either simple trial combinations or using general solution for quadratic formula.  Note that if discriminant is negative, then its solutions are complex with imaginary parts.


2:
If you want non-real, complex solutions, then the discriminant must be negative, or  {{{(-8)^2-4*3*k<0}}} and you can solve for k.  Pick any acceptable value for k to write a more specific quadratic equation.