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.