1 / 13

Rationalizing

Rationalizing. There is an agreement. in mathematics. that we don’t leave a radical. in the denominator. of a fraction. So how do we change the denominator of a fraction?. (Without changing the value of the fraction, of course.). The same way we change the denominator of any fraction!.

dierdra-lysaght
Download Presentation

Rationalizing

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Rationalizing

  2. There is an agreement in mathematics that we don’t leave a radical in the denominator of a fraction.

  3. So how do we change the denominator of a fraction? (Without changing the value of the fraction, of course.)

  4. The same way we change the denominator of any fraction! (Without changing the value of the fraction, of course.)

  5. We multiply the denominator and the numerator by the same number.

  6. By what number can we multiply to change it to a rational number?

  7. The answer is . . . . . . by itself!

  8. Remember, is the number we square to get n. So when we square it, we’d better get n.

  9. In our fraction, to get the radical out of the denominator, we can multiply numerator and denominator by .

  10. In our fraction, to get the radical out of the denominator, we can multiply numerator and denominator by .

  11. Because we are changing the denominator to a rational number, we call this process rationalizing.

  12. Rationalize the denominator: (Don’t forget to simplify)

  13. Rationalize the denominator: (Don’t forget to simplify) (Don’t forget to simplify)

More Related