Posted by jay on Sunday, July 6, 2014 at 3:03pm.
Find all zeros of the polynomial
P(x)=x^3  2 x^2  9 x  30.

algebra  Steve, Sunday, July 6, 2014 at 5:18pm
look for easy roots first: 1,2,3,5,6
A little synthetic division shows that
P(x) = (x5)(x^2+3x+6)
and you can do the quadratic as usual