2) Consider the polynomial j (x) = -3x4 + x3 - 2x2 - 9x + 20. a) [1] Show how many operations are needed to calculate the value for j(-4). b) [2] Use Horner's method to find the telescoping form of j(x). c) [1] Using your answer in part b, show how many operations are needed to calculate the value for j (-4). d) [2] Using your experience from all of the telescoping form problems, how many operations are needed to calculate a value of a polynomial of order n (highest degree)? Explain why