As part of a control engineering problem, I need to factorise this polynomial.
s^3 + 16s^2 + 85s + 250
(EDIT: the images failed so had to write it in this form)
I know that the roots are -10, -3+4j and -3-3j.
The Attempt at a Solution
I'm not quite sure where to begin with this. Should i guess a factor and attempt long division to see if it is one? or what should i do?