Which of the following would represent then first step in simplifying the problem 7 + 5(6 - 2)÷2

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

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

What is the volume of a cone with a height of 6 cm in the radius of 2 cm