Calculus I - Computing Limits
tutorial.math.lamar.edu › ComputingLimitsJul 24, 2021 · Recall that rationalizing makes use of the fact that. ( a + b) ( a − b) = a 2 − b 2 ( a + b) ( a − b) = a 2 − b 2. So, if either the first and/or the second term have a square root in them the rationalizing will eliminate the root (s). This might help in evaluating the limit.