Lesson 4

Are You Ready?

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

1. Rearrange the following equations to isolate and solve for the variable.
   
   
   1. 5x + 1 = 7 + 3x Answer
      
      
   2. 4(x − 2) = 3(2x − 7) Answer
      
      
   3. Answer
      
      
   4. Answer
      
      
2. Factor the following expressions.
   
   
   1. Answer
      
      
   2. 4x2 − 9y2 Answer
      
      
   3. a2 − 2a + 3 Answer
      
      
   4. 3n2 − 2n − 5 Answer
      
      
   5. 16x2 − Answer
      
      
3. Find the roots of the following equations using the quadratic formula.
   
   
   1. x2 + 4x − 21 = 0 Answer
      
      
   2. 3x2 + 6x = −10 Answer
      
      
   3. −3x2 + 12x + 1 = 0 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.