Use the factor theorem and synthetic division to decide whether the second polynomial is a factor of the first. xcubedplus7x Superscript 2plus9?; xminus3 Question content area bottom Part 1 Is xminus3 a factor of xcubedplus7x Superscript 2plus9?? ?Yes, because ?f(3?)equals0. ?No, because ?f(3?)equals ?? enter your response here