(a) Use a calculator or a computer to find / (x2 + 10)dx. Enter the exact answer. (x2 + 10) dx = (b) Estimate / (x2 + 10) dx using a left-hand sum with n = 3. Enter the exact answer. 10 ( 2 + 10 ) ax = Is this sum an overestimate or underestimate of the true value found in part (a)? The sum is an underestimate. (c) Estimate / (x2 + 10) dx using a right-hand sum with n = 3. Enter the exact answer. (x2 + 10)ax =