Lesson 3

Are You Ready?

Complete these questions. If you experience difficulty and need help, visit Refresher or contact your teacher.

1. Write the expanded form of each of the following:
   
   
   1. y = (x + 4)2 Answer
      
      
   2. f(x) = (x − 5)2 Answer
      
      
   3. y = 4(x + 3)2 Answer

2. Factor each of the following perfect-square trinomials by showing the trinomials as a binomial squared.
   
   
   1. x2 + 14x + 49 Answer
      
      
   2. x2 − 12x + 36 Answer
      
      
   3. x2 − 6x + 9 Answer
      
      
   4. x2 − 24x + 144 Answer

How did the questions go? If you feel comfortable with the concepts covered in the questions, skip forward to Discover. If you experienced difficulties, use the resources in Refresher to review these important concepts before continuing through the lesson.