Respuesta :

mathmate
Use the quadratic formula:
for equation Ax^2+Bx+C=0
x=(-b +/- sqrt(b^2-4ac))/2a
substituting, 
=(6 +/-sqrt(6^2-4*3*1))/(2*3)
=(6 +/- 0)6
=1 multiplicity 2. (both real)
If the complex form is required, then
{1+0i, multiplicity 2}