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Lesson 4

1. Lesson 4

1.2. Are You Ready?

Mathematics 20-1 Module 4

Module 4: Quadratic Equations and Inequalities

 

Are You Ready?
 

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

  1. Rearrange the following equations to isolate the given variable.

    1. Isolate b.

       


      Answer

    2. Isolate a.

       


      Answer

    3. Isolate y2.

       


      Answer

  2. How many different roots can any given quadratic equation have? Answer

  3. Solve each of the following quadratic equations by completing the square. Report answers as

    • exact values
    • decimals rounded to the nearest hundredth

    1. x2 − 8x + 13 = 0 Answer

    2. 3x2 − 5x − 1 = 0 Answer

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