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.
a−b−c+d=1; a^2+b^2−c^2−d^2=3; a^3−b^3−c^3+d^3=−5; a^4+b^4−c^4−d^4=15
a−b−c+d=1; a^2+b^2−c^2−d^2=3; a^3−b^3−c^3+d^3=−5; a^4+b^4−c^4−d^4=15
Natural Language
Math Input
Extended Keyboard
