williamp0514 williamp0514 16-01-2021 Mathematics contestada Which of the polynomials below is a 3rd degree polynomial? Select one: a. 5x 3 − 6x 4 + 7x 2 b. 3x 2 − 5x + 7 c. 5x 2 − 6x 3 + 7x − 8 d. 3x 3 + 4x 5 + 6