$\displaystyle \lim_{x \to -\infty} \frac{x^2}{x^2+x-2}$

and

$\displaystyle \lim_{x \to \infty} \frac{x^2}{x^2+x-2}$

apparently they both approach the horz asymptote of y=1 which must mean they the limit of both is 1

however what steps are taken from the expression to arrive at this