In below Problems, equations are given whose graphs enclose a region. In each problem, find the area of the region.
1. f (x)=x2+2; g(x)=-x2; x=0; x=2
2. f (x)=x2; g(x)=-1/ 10 (10x); x=0; x=3
3. Y=x3-1; y=x-1; to the right of the y axis
4. y=x2-2x+1; y=x2-5x4; x=2
5. y=1/2 x2; y=x2-2x