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How can i continue from here, answer is x=0,-2
You lost a factor 4 for 2^{x} 2^{x}.
I would make some common factors of 10^{x} and from there on say that you can see the solution. There is no nice way to solve this as far as I can see.
If the equation is:Answers are x=0, x=-1.
Anyone have a clue how to show it ? it doesn't have to be a proof.