Estimate the area under the graph of f(x) = x2 + x + 1 over the interval [0, 4] using ten approximating rectangles and right endpoints. Rn Repeat the approximation using left endpoints. Ln Report answers accurate to places. Remember not to round too early in your calculations. Question Help: Video 1 Estimate the area under the graph of f(x) 22 + 2 approximating rectangles and right endpoints. over the interval [2, 5) using five Rn Repeat the approximation using left endpoints. Ln = Report answers accurate to places. Remember not to round too early in your calculations