What are 2 numbers, where if you add them, you get 4, and if you multiply them, you get -12?

When turned about its axis of rotation, which shape could have created this three-dimensional object?

Which ahows the graph of the solution set of 6x+4y< 12

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