Questions 2&3Please show work

3 8) +C 2. Evaluate the definite integrals: a. J ( * + 2Vx) dx b. 1 2 13 dx C. 3x2 +8x -1 (x'+4x2)2 dx 3. Using rectangles whose height is given by the value of the function at the midpoint of the rectangle's base, estimate the area under the graph using four rectangles. Sketch the graph of the function with the rectangles associated with the Riemann sum. f(x) = x2 between x =0 and x=2