Math 10C Module 2 Lesson 6

Module 2: Roots and Powers

ย 

Lesson 6: Rational Exponents

ย 

Focus

ย 

This is a photo collage of a teenage boy talking on a cellphone and four smiling friends.

ยฉ Andresr/shutterstock; ยฉ Horst Petzoid/shutterstock

There is currently exponential growth in smartphones and social networking and, for some people, this is a cause for concern. When important information is on a work computer, there is not much chance it could be lost or stolen, but with smartphones that is changing.

ย 

Encryption has been used for years to keep important information secure. Most computer databases support encryption of sensitive tables, rows, or columns. That means everything in the database is secure, but it slows down access to the information.

ย 

A new direction some companies are taking is to decide what must be secure. If there are only a few sensitive columns (such as a customerโ€™s credit card number, bank account number, or social insurance number), then only those columns need to be encrypted. This allows easier and faster information sharing while still protecting sensitive information. As the world changes, encryption changes too.

Outcomes

At the end of this lesson, you will be able to

  • express powers with rational exponents as radicals and vice versa
  • solve a problem that involves exponent laws or radicals
  • identify and correct errors in a simplification of an expression that involves powers

Lesson Questions
  • How are powers and radicals related to each other?
  • How do you determine and understand error in mathematics?

Lesson Completion and Assessment

As you work through each lesson, complete all the questions and learning activities in your binder using paper and pencil, clearly labeling your work (they refer to this as your course folder). These include the Are you Ready, Try This, Share and Self Check questions. Check your work if answers are provided. Remember that these questions provide you with the practice and feedback that you need to successfully complete this course.
Once you have completed all of the learning activities, take the Lesson Quiz. This is the assessment for each lesson and is located under the Assess tab or by using the Quizzes link under the Activities block.


** Note โ€“ Share questions may have to be done on your own depending on your learning situation**


ย