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.
Solve[2x-20=-2x *a, 2y=a, y-x^2=0]
Solve[2x-20=-2x *a, 2y=a, y-x^2=0]
Natural Language
Math Input
Extended Keyboard