Originally Posted by

**perjac** Hi All,

Been about ten years since I was in school and am now doing a maths refresher course externally. I am really really stuck on a problem:

$\displaystyle

\frac{x}{x^2-1} - \frac{x+1}{x-1}

$

I would assume that the common denominator is x(x-1) therefore

$\displaystyle \frac{x}{x(x-1)} - \frac{x(x+1)}{x(x-1)}$

$\displaystyle \frac{x-x(x+1)}{x(x-1)}$

That's where I get stuck. I'm sure it has something to do with the x-x(x+1)

$\displaystyle x-x^2+x$ maybe???

Thanks guys (and gals),

CHeers,

J