Answers to both questions please

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

Empty box + box + empty box fill in the box is equal to 30 how

If (x-2) 2= 49, then x could be a. -9 b. -7 c.- 2 d. 5 e.9