Section 2.4: Reading questions on the product rule

Read Example 51 on pages 86-87 in the APEX Calculus textbook (version 3). Using Example 51 as a guide, answer the following questions.
Suppose [math]. Here are two different ways to compute the derivative of this function.
  1. First, expand the given product and then compute the derivative.
    [math]
    [math]
  2. First, apply the product rule and then simplify the result.
    [math] [math] [math] [math] [math]
    [math] (simplified)