Can you Please help me slove this homework problem.

1.)Use left and right endpoints and 8 rectangles to find two approximations of the area of the region between g(x) = x² + 1 and the x axis over the interval [ 1 , 3 ].

2.)Using the Riemann Sum process evaluate the definite integral - remember use LIMIT DEFINITION of Reimann Sums to find the area of the region between the graph of the function and the x-axis over the interval[ 1 , 4 ]y = 2x² + x.Check your result as a definite integral.