onsider the following function. f(x)=x-3x -2x+6 (a) Use the zero or root feature of a graphing utility to approximate the zeros of the function accurate to three decimal places. (Enter your answers as a comma-separated list.) x= (b) Determine the exact value of one of the zeros. x = (c) Use synthetic division to verify your result from part (b), and then factor the polynomial completely. f(x)