What do you with a limit when direct substitution leads to the indeterminate form 0/0?  You're goal is to find a function that agrees with yours at all but one point. One of the ways to accomplish that is to Factor and Cancel.  Duration: 12:21 

Example 10 presents another limit strategy, which requires you to Expand and Simplify.  Duration: 3:18 

Does your limit contain radical functions?  Try Rationalizing the Numerator to resolve your indeterminate form, as we do on Example 11.  Duration: 8:06

When your limit is in possession of a complex fraction, resolve the indeterminate form by Multiplying by the Common Denominator.  Duration: 8:43