hello, i have a homework problem that is giving me all kinds of trouble. If any one could help it would be greatly appreciated.

the equation is $\displaystyle 12x^6-65x^5-69x^4+159x^3-21x^2+224x+60$

I hope I posted that in an acceptable format.

So far i have the real roots which are 6, -2, 1 2/3, -.25

I am not sure where to go from here to find the complex roots...

Thank you for your help in advance.