Help with adding and subtracting rational expressions

I've been having trouble with this equation for a little while. I cannot get the answer that's in the answer key and have no idea where I'm going wrong. If someone could please show their calculations I'd really appreciate it.

http://latex.codecogs.com/gif.latex?...x-2}{4-4x+x^2}

Re: Help with adding and subtracting rational expressions

can you finish from here?

Re: Help with adding and subtracting rational expressions

Thanks so much! When I multiplied the second term by -1/1 to change (2-x)(2+x) to (x-2)(x+2) I was changing the numerator from -x+8 to x-8. That problem was really getting to me. Thanks again!