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.
Discriminant[x^3 - bx^2 + (ac-4d)x - (a^2d+c^2-4bd), x] == Discriminant[x^4 + ax^3 + bx^2 + cx + d, x]
Natural Language
Math Input
Extended Keyboard
Examples
Upload
Random