Lol plss we did this literally a week ago and I forgot how to do it

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

Proceed as in example 3 in section 6.1 to rewrite the given expression using a single power series whose general term involves xk. ∞ n(n − 1)cnxn − 2 n = 2 − 4 ∞ ncnxn n = 1 + ∞ cnxn n = 0

What is x3+3x2−16x−48 divided by x−1?