all the questions please

Show all necessary work 1. (15:1,2,2,5, 1,1,3) Let f(x) =x5 - 12x3+ 2x2+27x-18. a. Use Descartes' rule of signs to find the e. Write f(x) in factorized form. possible number of positive real zeros. b. Use Descartes' rule of signs to find the f. List the y-intercept and x-intercepts of possible number of negative real zeros. f(x). c. Use the rational zeros theorem to determine the possible rational zeros of f(x). g. Sketch the graph. Incorporate the x- intercepts (and the multiplicity of each) d. Find the zeros of f(x) by using the and y-intercept. You don't need to candidates you get in part (c). Make graph it to scale. sure you also mention the multiplicity of each zero at the end. Show only the work that gives you the zero