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.
Lim[x->0] ((x+2x^2)+(x+2x^2)^2-(x+x^2)-2(x+x^2)^2)/(-x^2)
Extended Keyboard
Upload
Examples
Random