a n - 1 ⁢ x n - 1 + a n ⁢ x n + + a 2 ⁢ x 2 + a 1 ⁢ x + a 0 Subscript a n -1 x n -1 Subscript a n x n Subscript a 2 x 2 Subscript a 1 x Subscript a 0