Uh oh! Wolfram|Alpha doesn't run without JavaScript.
Please enable JavaScript. If you don't know how, you can find instructions
here
.
Once you've done that, refresh this page to start using Wolfram|Alpha.
((-1)^(k+1)*(2k+3)^3/((2k+3)^4+4))+((-1)^k(k+1)/(4k^2+8k+5))
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random