Use synthetic division and the factor theorem to determine whether x-3 is a factor of f(x). f(x) = 3x³-14x² +21x-18 Complete the first row of the synthetic division table. Find the remaining zeros of f(x) given that c is a zero. Then rewrite f(x) in completely factored form and sketch its graph. f(x)=x³ - 2x² -5x+6; c= -2 is a zero