HELP NEEDED!!! WILL MARK BRAINLIEST!!! 
Given the following equation, x^4 - x^3 - 3x - 2.  Use synthetic division to test the following 3 points and show which one is a root. Must show synthetic division for all 3 of the following test points.  Test these 3 possible root points also called possible zeros using synthetic division: (x,y) = (-1, 0) (-3, 0) (2, 0).