### Home > PC3 > Chapter 6 > Lesson 6.2.2 > Problem6-93

6-93.

Determine all of the roots of $p(x)=x^4−x^3−11x^2−x−12$. Then sketch a graph of the function. Check your sketch on a graphing calculator.

The possible rational roots are factors of $12$.

One of the roots is $x = −3$. Divide out the factor $\left(x + 3\right)$.