HELP! Impossible or not? rearrange eqn to make x the subject

I am currently undertaking a masters in mathematics and am doing some statistical modelling.
I desperately need to rearrange the following equation to make x the subject (x=...)
I cannot do this, is it possibLe, if so can you show me the solution. I have been aLl around the houses with this problem, attempting to use binomial, substitions etc.
Please help! The equation can be seen below.


K = (x((1+x)^n))/(((1+x)^n)-1)