I would like to know how to correctly solve limit as $x$ approaches negative infinity for the following expression.
I would post my attempt at a solution but I apparently can not post pictures and I do not know how to use the mathematical notation very well. But I attempted to solve it like any "power type" limit, trying to dig out the $x$ from the numerator and denominator so it can cancels out. Doing that, I arrived at a result of $1$, but according to a smart book it should be $-1$.
Any help would be much appreciated, thanks.