Question 1081521
Since the given expression has domain issues at x=-1 (i.e. the expression is undefined there, as written), you'll need to divide it out (in fact, whenever you see limit problems, check if direct substitution will work, if not, then look for common factors):

{{{  (1-2x-3x^2)/(x+1) = ((x+1)(-3x+1))/(x+1) = -3x+1 }}}

THEN (if you actually needed to find the limit) you could use direct substitution on 
{{{ -3x + 1 }}}  because it won't have domain issues at x=-1.