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.
simplify -k((a + b)/2)² - (k / 4 + K/2)(a - b)²
simplify -k((a + b)/2)² - (k / 4 + K/2)(a - b)²
Natural Language
Math Input
Extended Keyboard