Let p be a probability distribution on {0, 1, 2} with moments

Let p be a probability distribution on {0, 1, 2} with moments ?1 = 1, ?2 = 3/2.,(a) Find its ordinary generating function h(z).,(b) Using (a), find its moment generating function.,(c) Using (b), find its first six moments.,(d) Using (a), find p0, p1, and p2.