1. The problem statement, all variables and given/known data Find the limit of f(x) as x-> - (Infinity) 2. Relevant equations (x4+1)(3-2x)3/(x+1)5(2-x2) 3. The attempt at a solution I knew that for rational functions we have to divide both numerator and denominator by the highest power of x in the denominator, but this is confusing. Should I expand the equations? Please help ??