saraymya7 saraymya7 28-11-2022 Mathematics contestada Which of the following expressions is a polynomial? O A. f(x)=x^3-11x²+3^x O B. f(x) = -3x^4√x+13x² - 5x O c. f(x)=2/x^2-15x ○ D. f(x) = 2x³-5x^5-2/9x² +9