Show that the given number C is a zero of P(x). Use the factor theorem and division algorithm to find all other zeros of P(x). Determine the intervals in which P(x) lies either above or below the x-axis. Sketch a graph of P(x) and state its end behavior. P(x)= x^3-4x^2-3x+18 ; C= -2

My assignment is due in less than 24 hrs; any help would be greatly appreciated! ^.^