Lesson 2

Are You Ready?

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

1. Is it possible to add or subtract variables in these forms? If it is, provide the answer. If not, explain why.
   
   
   1. 5x3 + 3x3 Answer
      
      
   2. 4x3 − 2x4 Answer
      
      
   3. x3 + x2 Answer
      
      
   4. 5x3 − 3x3 Answer
      
      
   5. 3(x − 2)2 + 4(x − 2)2 Answer
      
      
2. Simplify the following expressions:
   
   
   1. (x3)(x2) Answer
      
      
   2. (5x3)(3x4) Answer
      
      
   3. Answer
      
      
   4. Answer
      
      
   5. 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.