Proceed as in this example to rewrite each power series as a power series whose general term involves ∑ n=1
[infinity]
​
nc n
​
x n−1
= +∑ k=2
[infinity]
​
((k+1)(k+2)cx x
​
)x k
4∑ n=0
[infinity]
​
c n
​
x n+2
=∑ k=2
[infinity]
​
(x k
Rewrite the given expression using a single power series whose general term involves x k
. n=1
∑
[infinity]
​
nc n
​
x n−1
+4 n=0
∑
[infinity]
​
c n
​
x n+2
​
+ k=2
∑
[infinity]
​
(
​