Question 985301
Nothing to cross-multiply unless the subtraction between the two rational expressions is a mistake and should be an equality symbol.


According to what you present in your request, you have just a subtraction, and should do this:


{{{x^2/(x^2-4) - ((x+1)/(x+2))((x-2)/(x-2))}}}


{{{(x^2-(x^2-x-2))/(x^2-4)}}}


{{{(x+2)/(x^2-4)}}}-------This may be as far as should be done without changing the meaning.