YESS SIRRRR/MAAM HELP ME GET A PERFECT SCORE

Find the number of positive, negative , and imaginary roots of the following polynomials. Number 1 is done for you. Polynomials Number of Roots No. positive negative imaginary - P (x) = x3 - 2x2 - x +2 P (x) = x3 - 13x + 12 P (x) = 2x4 + 9x3 + 11x2-4 + P (x) = 3x3 - 2x2 - 3x + 2 in P (x) = 2x3 + 3x2 - 8x + 3