Determine the location of each local extremum of the function. 25 ²+ +6x +2 What is/are the local minimum/minima? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The local minimum/minima is/are at x = (Use a comma to separate answers as needed. Type integers or simplified fractions.) B. The function has no local minimum. Find the location of the local extrema of the following function. f(x)=x² + 9x²³-81x² + 20 What is/are the local minimum/minima? Select the correct choice below and, if necessary, fill in the answer box to complete your choice. A. The local minimum/minima is/are at x = (Use a comma to separate answers as needed. Type integers or simplified fractions.) OB. The function has no local minimum.