4. Manu determines the roots of a polynomial equation p(x) = 0 by applying the theorems he knows. He organizes the results of these theorems. From the fundamental theorem of algebra, Manu knows there are 3 roots to the equation. From Descartes' rule of sign, Manu finds no sign changes in p(x) and 3 sign changes in p(-x) 1 The rational root theorem vields + - ), +1. =5, +2, +2,. 4, 15,$1/0,120 as to list or possible raronal roots. The lower bound of the polynomial is-6. The upper bound of the polynomial is 1. What values in Manu's list of rational roots should he try in synthetic division in light of these findings