Question 322785
{{{s^3-6s^2-27s}}}

1. Factor out s  {{{s(s^2-6s-27)}}}
2.  Factors of 27 that added give -6.  b/c the last term in the polynomial is negative, you are looking for 1 pos. and 1 neg.  -9, +3

{{{s(s-9)(s+3)}}}