Polynomial regression - Rosetta Code

Polynomial regression You are encouraged to solve this task according to the task description, using any language you may know. Find an approximating polynomial of known degree for a given data. Example: For input data: x = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; y = {1, 6, 17, 34, 57, 86, 121, 162, 209, 262, 321}; The approximating polynomial is: 3 x2 + 2 x + 1 Here, the polynomial's coefficients are