o$)$ Set up the integral$($s$)$ used to find the area of the region bounded by $y=2x^3+x^2+x+5$ and $y=x^3+x^2+2x+5.$ Do not evaluate the integral$($s$).$

$2x^3+x^2+x+5=x^3+x^2+2x+5$

$x^3-x=0$

$x(x^2-1)=0$

$x=-1,x=1$

${\displaystyle \underset{-1}{\overset{0}{}}}(2x^3+x^2+x+5]dx+{\displaystyle \underset{0}{\overset{1}{}}}[x^3+x^2+2x+5]dx$

${\displaystyle \underset{0}{\overset{1}{}}}(-x^3+x)dx+{\displaystyle \underset{0}{\overset{1}{}}}$

$-2?$