please guys help
express as a single fraction (1/x)-(2/x-2)+(x-1/x^2+1)
and (x+1/x^2+1)+(1/x+1)-(1/(x-1)^2)+(2/x-2)
please help guys
As furor celtica said you need to make everything have the same denominator, which for your question would be:
$\displaystyle \frac{A}{x(x-2)(x^2+1)}$
For the numerator you need to multiply each term by the other 2 denominator, for example:
$\displaystyle \frac{1(x-2)(x^2+1)...}{x(x-2)(x^2+1)}$.
Repeat this method for your other question.
Hope this helps