The following problem involves some factoring by grouping. Remember, before you can divide out factors common to the numerator and denominator of a product, you must factor completely. 
Definitions:
Q3: Perform the indicated operations. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8806/.jpg" alt="Perform
Q30: Factor the expression as the sum or
Q48: Put the radical expression into simplified form.
Q54: Put the radical expression into simplified form.
Q104: An economy car travels 234 miles on
Q128: Solve the following proportion. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8806/.jpg" alt="Solve
Q160: Factor the following problem completely. First, factor
Q206: Simplify each term, if necessary, and then
Q223: Factor by grouping. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8806/.jpg" alt="Factor by
Q231: Perform the indicated operation. <img src="https://d2lvgg3v3hfg70.cloudfront.net/TBX8806/.jpg" alt="Perform