Chapter 11, Problem 4P

To determine

(a)

The interpretation of $x$ as symbolic variable; the derivation of the equation of the polynomial that has the roots $x=-2$, $x=-0.5$, $x=2$, and $x=4.5$.

To determine

(b)

The roots of the polynomial $f\left(x\right)=x^6-6.5x^5-58x^4+167.5x^3+728x^2-890x-1400$ by using the $\text{factor}$ command.