5. (As preparation for the exam, you should study up on end behavior and multiplicities of zeros, and then try to do these by hand quickly] Sketch the function P(x), clearly indicating the end behavior and the x-intercepts. a. P(x) = 2x3 + 5x2 9x 18 = (2x + 3)(x 2)(x + 3) b. P(x) = x6 3x5 + 4x3 = x3(x 2)2(x + 1)