(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I'm trying to solve for x in a chemical equilibrium problem (college chem). Once x is found I have no problem finding equilibrium concentrations. What's important is below.

2. Relevant equations

5.10 = [(1+x)/(1-x)]^2 --------> x=.387 (right answer)

3. The attempt at a solution

I've tried to take the square root of the right side and cross multiply and solve for x that way, but I keep getting 1. I also tried to expand the numerator with the common denominator to see if I missed something, but solving for x that way eventually got me 1 also. I know there's something simple I'm missing.

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# Homework Help: Basic algebra responsible for brain fart

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