KB9999 KB9999 01-12-2017 Mathematics contestada Which of the following expressions are polynomials? Check all that apply. Check all that apply. A. x^3+ 2x^2 B. 2x^-3 - 5x^-1 + 3 C. 1/4 x^5 + 1/3 x^4 -1/2 x^3 D. -9x E. 5/x -1
