Rationalize the denominator to simplify a radical expression

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  • Опубликовано: 5 ноя 2014
  • 👉 Learn how to divide rational expressions having square root binomials. To divide a rational expression having a binomial denominator with a square root radical in one of the terms of the denominator, we multiply both the numerator and the denominator by the conjugate of the denominator and then simplify. When the square root in the denominator is covering both terms of the denominator, we multiply both the numerator and the denominator with the denominator and simplify.
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    ✅Divide by the 4th root with variables
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    • Rationalize the denomi...
    ✅Rationalize the denominator with radical binomials
    • Rationalize the denomi...
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    ✅Simplify the square root of a fraction
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Комментарии • 80

  • @choppchopp9975
    @choppchopp9975 Год назад +18

    Who else has a test soon and just realized that you are wayyy more screwed than you thought you were…

  • @jenniferrangel4902
    @jenniferrangel4902 5 лет назад +19

    I needed you more than you will ever know! OMG, you saved my little mathematical heart from killing people.

  • @sawyerdann2507
    @sawyerdann2507 4 года назад +4

    AWESOME! You helped me find how to simplify radical expressions!

  • @XxMesmerized1LOvEXx
    @XxMesmerized1LOvEXx 4 года назад +20

    You are the best teacher! I would have been so lost without you lol... I have watched most of your videos and sometimes wish I had you as my teacher in high school because otherwise, I would not have had to re-take algebra 2 in college lol. Thank you once again.

  • @ivansyekachov4438
    @ivansyekachov4438 3 года назад +4

    THANK YOU!!! you are the best teacher I've never had

  • @eva-fi1ks
    @eva-fi1ks Год назад

    THANK YOU SO MUCH I TOOK SO LONG TRYING TO GET THIS RIGHT AND I FINALLY GET IT
    just one question - after you do the multiplying in the box, how do you know what order it goes in? or does the order not matter

  • @BumberenzoManilupinoCity
    @BumberenzoManilupinoCity 2 года назад

    Thank you! This is a creative way of explaining things by using boxes. I’m going to use that for my worksheets.

  • @ayeshamuneeb5197
    @ayeshamuneeb5197 3 года назад +1

    Omg this was such a help I’ve been stuck at a question for an hour

  • @KJoshi2006
    @KJoshi2006 4 года назад +3

    Love from India sir..
    Thank you so much 👍👍👍👍👍

  • @sierraduncan9162
    @sierraduncan9162 2 года назад

    It feels so good when you understand something ! Thank You sir !!!!

  • @thanu134
    @thanu134 3 года назад

    I had a little confusion and you cleared it. Thankyou

  • @samkim9401
    @samkim9401 Год назад +1

    You saved my life! Thank you so much!

  • @4kluna839
    @4kluna839 3 года назад +2

    Thank you for this❤️

  • @adrenvargiz9704
    @adrenvargiz9704 4 года назад +1

    This helped tons tysm!

  • @JanWexe
    @JanWexe 26 дней назад

    Thank you for learning me this. It took me a long time to understand by myself.

  • @TheBowlerYT
    @TheBowlerYT 11 месяцев назад

    Thank you, you have truly helped me greatly!

  • @lizadark2841
    @lizadark2841 5 лет назад +3

    excellent thank you very much

  • @kramchancel1266
    @kramchancel1266 2 года назад

    THANK YOU SO MUCH!!!!!!!!!!!!!!!!!!!!!!!!!! I have spent 3 hours doing all types of maths and not one of them was matching the correct answer thanks!~

  • @victoriasilva968
    @victoriasilva968 5 лет назад +6

    taught it better than my math teacher ever will

    • @brianmclogan
      @brianmclogan  5 лет назад +5

      just happy that I am able to help you out Victoria

  • @annderiyaharrison6293
    @annderiyaharrison6293 3 года назад +1

    Thank you thank you. Life saver😭🙏

  • @davidhuynh3393
    @davidhuynh3393 2 года назад

    Isnt the left diagonal o/ the first box 108sqr. Root of 3

  • @venomandpotatoplays5256
    @venomandpotatoplays5256 2 года назад

    Thank uuuuu so much this will help alottt 😁🤚

  • @alisaad5940
    @alisaad5940 4 года назад +1

    shouldn't the negative in the numerator cancel out the negative in the denominator?

    • @alejandrohits5066
      @alejandrohits5066 2 года назад

      Yes, the final answer should be positive 20 minus7squareroot three divided by positive eleven.

  • @adnankashalo1409
    @adnankashalo1409 3 года назад

    best teacher

  • @austinharvey809
    @austinharvey809 6 месяцев назад

    Thanks so much man my pre cal teacher I guess thought I should have already known this lol

  • @yaritzetramos8928
    @yaritzetramos8928 3 года назад

    You’re a lifesaver 😭

  • @user-jw1hi4yd4w
    @user-jw1hi4yd4w 6 месяцев назад

    hello sir, 😀😀😀
    great video there
    on 3:25 why did three not divide three.

  • @Jiggalicious27
    @Jiggalicious27 Год назад

    very cool thanks

  • @elliptxy
    @elliptxy 4 года назад +1

    thank youuu

  • @ducducankarenmae2283
    @ducducankarenmae2283 2 года назад

    I think sir the final answer is
    -7 square root of 3 over1; and
    Positive 20/11

  • @richashrivastava4788
    @richashrivastava4788 5 лет назад +1

    Plz answer this too
    3+√2 / 4√2 rationalize the denominator

    • @megharamadas9426
      @megharamadas9426 5 лет назад

      You can square the numerator and denominator, so you can eliminate the root in the denominator.

    • @XxMesmerized1LOvEXx
      @XxMesmerized1LOvEXx 4 года назад

      www.mathsisfun.com/algebra/rationalize-denominator.html
      this website ha been very helpful to me. This should help you figure out your answer :)

    • @Yamakne733
      @Yamakne733 3 года назад

      3root 2+2/8 I guess!

  • @KolyaBennett
    @KolyaBennett 11 месяцев назад

    Question 16.

  • @6ixkr8k
    @6ixkr8k 5 лет назад +8

    FUCKING GODDDDD

    • @brianmclogan
      @brianmclogan  5 лет назад +4

      happy to help

    • @comfychronicles
      @comfychronicles 4 года назад

      @@brianmclogan HAAHHAHAHAHAHHAHAHAHA THIS REPLY HAD ME DEADDDD

  • @patches393
    @patches393 Год назад

    was i wrong or right i saw another video of you putting a different form

    • @brianmclogan
      @brianmclogan  Год назад

      I am not sure do you have a timestamp we can look at?

  • @kiriyareview9823
    @kiriyareview9823 3 года назад +1

    I’m watching this December 2020 at 202am. Smh

  • @patches393
    @patches393 Год назад

    you help alot thought i make good grades beacause of you

    • @brianmclogan
      @brianmclogan  Год назад

      Love it, so happy to hekp

    • @patches393
      @patches393 Год назад

      @@brianmclogan why did you put a emoij was i right or wrong

  • @chanderkalasharma8255
    @chanderkalasharma8255 5 лет назад +3

    Can't we just cancel negative sign at the end

  • @Princessivie6666
    @Princessivie6666 5 лет назад +2

    Wait why is it -20? When -60 is divided by -33 you get positive 20/11

    • @brianmclogan
      @brianmclogan  5 лет назад

      I divided every number by 3

    • @ducducankarenmae2283
      @ducducankarenmae2283 2 года назад

      Yes, i also get your point

    • @marufabrar
      @marufabrar 2 года назад

      how can the denominator will be negative we must do to positive

  • @kirstenfernandez7647
    @kirstenfernandez7647 4 года назад

    Wow

  • @patches393
    @patches393 Год назад

    you forgot to put the costant first

  • @patches393
    @patches393 Год назад

    i got 54-19 sqrt 3/33

    • @brianmclogan
      @brianmclogan  Год назад

      So you know the timestamp where we diverge?

    • @patches393
      @patches393 Год назад

      @@brianmclogan no

  • @markchitseko1477
    @markchitseko1477 4 года назад

    Hello people

  • @suneelchand3635
    @suneelchand3635 5 лет назад +1

    Hey old use identities ....😢

  • @patches393
    @patches393 Год назад

    am i wrong
    srry if i didnt mistaken

  • @gulfam7186
    @gulfam7186 2 месяца назад

    2024 any one

  • @shyamalathanam5801
    @shyamalathanam5801 6 лет назад

    u r wrong it's 12 not 21

    • @brianmclogan
      @brianmclogan  6 лет назад

      what point in the video are you referring to?

    • @adelepeter-point8198
      @adelepeter-point8198 6 лет назад +1

      At 3:58 it looks like addition from the table he used.
      -60+ 21 is correct because it has both 9 plus 12 then the root. :)

    • @shabbusultana7093
      @shabbusultana7093 6 лет назад

      adele peter-point
      Is also correct

    • @shasmitanayak5771
      @shasmitanayak5771 5 лет назад

      That is correct

  • @Slowjohnson
    @Slowjohnson 5 лет назад +1

    Usually watch these vids until he used this “box method” 👎🏽

    • @rtp7431
      @rtp7431 4 года назад

      yeah its just more visual.

  • @annderiyaharrison6293
    @annderiyaharrison6293 3 года назад

    Thank you thank you. Life saver😭🙏