I don't know if this part of the forum is the appropriate place for this kind of a question but I think you guys can still help solve my problem.

My Chemistry teacher asked me to find at least two values of x for the expression/equation rather

2^x=4x without using a calculator or without relying much on a calculator.

So I used common sense and say that x=4 and I got stuck from there.

This is what I did: 2^x=2^2(x).By just looking at it, I concluded that x must be 4 for the two sides to be equal. From here, I don't know where to go. Is there a formula(good formula maybe) to solve this kind of a question? What can I do to find the other values of x?

Your help will be highly appreciated.