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.
log(10,x^2-7)=log(10,3x-9) for x real
log(10,x^2-7)=log(10,3x-9) for x real
Natural Language
Math Input
Extended Keyboard
