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Home > PC > Chapter 11 > Lesson 11.2.1 > Problem 11-74

11-74.
  1. Find the following limits, rationalizing the numerator where necessary. Homework Help ✎

  2. Example:


After rationalizing the numerator, did you get:

Is it necessary to rationalize the numerator in this case?
What happens when you just use substitution?

Recall the cubic factoring formula: