CPM Homework Help : PC3 Problem 5-118

Solve: $0=x^5+x^4−20x^3−68x^2−80x−32$

Hint:

Think about all of the possible factors/roots of this polynomial.
All of roots of the polynomials must be factors of $32$ .

More Help:

If you graph the corresponding function, you can see that $x=−1$ and $x=−2$ is a double root.
Divide out the factors that correspond with these roots.