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.
plot (p^2-28p+121)/p^2 from 17-2sqrt42 to 17+2sqrt42
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random