For problems $2$ & $3$ you may use technology to evaluate the integral.

Shade and find the area bounded by the graphs of the indicated equations over the given interval.

a$.y=x^2-20$;$y=0$;$-2x0$

b$.y=x^2-2$;$y=5$;$-2x2$

c$.y=x^2-4$;$y=2x-1$;$-1x3$