Hi, this is the first time I have come across a question where x has appeared in an equation more than once so I am a bit stumped as how to find it.

55.17 = [(2x)^2]/[(2-x)(2-x)]

x = ?

I can simply it to:

55.17 = (4x^2) / [(2-x)^2]

55.17^(1/2) = 4x / (2-x)

but still can't find x

any help would be great