Multiplying Radicals and Then Simplifying

Поделиться
HTML-код
  • Опубликовано: 21 сен 2011
  • 👉 Learn how to multiply radicals. A radical is an expression or a number under the root symbol. To multiply radicals with the same root, it is usually easy to evaluate the product by multiplying the numbers or expressions inside the roots retaining the same root, and then simplify the result.
    To multiply radicals of different roots. It is usually easier to simplify the radicals first or transform the radicals into exponent form before multiplying them.
    👏SUBSCRIBE to my channel here: ruclips.net/user/mrbrianm...
    ❤️Support my channel by becoming a member: / @brianmclogan
    🙋‍♂️Have questions? Ask here: forms.gle/dfR9HbCu6qpWbJdo7
    🎉Follow the Community: / mrbrianmclogan
    Organized Videos:
    ✅How to multiply Radicals Expressions
    • How to multiply Radica...
    ✅How to multiply 4th roots with numbers
    • How to multiply 4th ro...
    ✅How to multiply square roots with variables
    • How to multiply square...
    ✅How to multiply radical expressions using distributive property
    • How to multiply radica...
    ✅How to multiply cube roots with numbers
    • How to multiply cube r...
    ✅How to multiply square roots with numbers
    • How to multiply square...
    ✅How to multiply radicals | learn about
    • How to multiply radica...
    ✅How to multiply square roots with variables
    • How to multiply square...
    🗂️ Organized playlists by classes here: / mrbrianmclogan
    🌐 My Website - www.freemathvideos.com
    🎯Survive Math Class Checklist: Ten Steps to a Better Year: www.brianmclogan.com/email-ca...
    Connect with me:
    ⚡️Facebook - / freemathvideos
    ⚡️Instagram - / brianmclogan
    ⚡️Twitter - / mrbrianmclogan
    ⚡️Linkedin - / brian-mclogan-16b43623
    👨‍🏫 Current Courses on Udemy: www.udemy.com/user/brianmclog...
    👨‍👩‍👧‍👧 About Me: I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those experiences to help students improve in math through practical applications and tips. Find more here: www.freemathvideos.com/about-me/
    #Radicals #brianmclogan

Комментарии • 289

  • @dawgsmycopilot
    @dawgsmycopilot 3 года назад +369

    IDK what they pay this dude but it is not enough. He's explained more concepts to me than 2 college algebra professors, 3 textbooks, and a partridge in a pear tree.

    • @yeseniamadrigal7146
      @yeseniamadrigal7146 3 года назад +1

      Lol agreed

    • @eatthebottle3297
      @eatthebottle3297 2 года назад +6

      💀💀💀 BRUH U GOT ME DEDDD

    • @theboldguy.
      @theboldguy. 2 года назад +5

      he is a good teacher the reason why you can't comprehend what the professors tell you is because they use too much terminology to explain even the basic stuff and plus when you don't understand the basics of math which are taught in high school you get a cocktail of confusion

    • @Ippomike
      @Ippomike Год назад

      Yo

  • @ravidu_
    @ravidu_ 5 лет назад +957

    Who else had that ad saying stop searching RUclips for help

  • @donte339
    @donte339 4 года назад +326

    Lets take the time to appreciate that he still replies and likes comments 8 years later

  • @laurynk4209
    @laurynk4209 3 года назад +73

    His personality seems so much brighter, fuller, and generally so much more fun in this video than it does in his newer ones.. years of teaching really wears people out. Thank you, Brian, for staying in it to educate for so long. We appreciate and respect you so much.

  • @dr.nutsacc
    @dr.nutsacc 3 года назад +94

    Almost 10 years later and this still taught me more then my teacher did in 3hrs

  • @andrewnavarro8187
    @andrewnavarro8187 6 лет назад +276

    Thanks... 7 years later

    • @brianmclogan
      @brianmclogan  6 лет назад +68

      you are very welcome!

    • @gonskii8168
      @gonskii8168 5 лет назад +18

      Thanks 8 years later

    • @kd0197
      @kd0197 4 года назад +13

      @@brianmclogan Thanks... incoming 9 years later

    • @g_g...
      @g_g... 4 года назад +14

      @@brianmclogan thanks 9 years later

    • @catherineanderson3911
      @catherineanderson3911 3 года назад +3

      @@brianmclogan thanks your helping me a lot with algebra 2 !!

  • @brianmclogan
    @brianmclogan  12 лет назад +97

    cool cool, glad I could help, let me know if there are other topics you are having trouble with

    • @jacobparties
      @jacobparties 3 года назад +1

      i waned to upvote but number of likes is nice

    • @Notsrichu
      @Notsrichu 3 года назад +1

      Lmao

    • @californiadreamin8423
      @californiadreamin8423 Год назад +2

      Hello Brian, great lecture. It’s 55 years approx since I must have covered this, but it’s gone into the ether , even though I have an engineering degree. So I’m trying to keep my brain active and filling in all the gaps which I suspect hindered me then. From across the pond.

    • @user-tl3pt9ux7k
      @user-tl3pt9ux7k 4 месяца назад

      Trigonometric Functions in calculus, help please!!

  • @jay_kobb8025
    @jay_kobb8025 4 года назад +108

    I’m watching these at exactly 2AM and my test is in 7 hours and I have 0 clue what’s going on. These have taught me better than my teacher has the entire unit 😭😭 a life saver

    • @sebastianhernandez7815
      @sebastianhernandez7815 4 года назад +4

      I felt this I have a test also in 7 hrs

    • @tomdayas
      @tomdayas 3 года назад

      lol jay kobb like from defending jacob

    • @providence3977
      @providence3977 3 года назад +1

      I have one in 3 hours it’s 6:48 am XD

    • @aflairforthe.evi.
      @aflairforthe.evi. 2 года назад +1

      OMG. it literally was EXACTLY 2 am when i saw this comment. it’s 2:01 now that i’ve typed this out but wow i didn’t expect to be called out like this. except for me it’s i forgot to do the homework, no test yet thankfully

    • @desckfulpieceofsht
      @desckfulpieceofsht 2 года назад

      Omg I have a 7 hours too

  • @slimmerslimeGameplay
    @slimmerslimeGameplay 5 лет назад +48

    Thanks man you legit way better than my current math teacher! Your amazing

  • @brianmclogan
    @brianmclogan  12 лет назад +22

    awesome! Glad I could help

  • @garymrozinskijr.4334
    @garymrozinskijr.4334 4 года назад +16

    Sean Evans from hot ones is somehow the best math teacher I’ve ever had😂😂

  • @Grayham14
    @Grayham14 2 месяца назад

    Absoulte legend. Explains things better than my teachers and in literaly 2 min. My teachers take a whole class period. This guy is great

  • @squib1651
    @squib1651 2 года назад +10

    I wish I had a teacher like this. All my teacher did was show us a video. and when we ask for help she just told us to look it up

    • @marydiannefronteras4214
      @marydiannefronteras4214 2 года назад +1

      What, really? That's unfortunate. Good thing Sir Brian teaches really well!! ^^

  • @mitchy2699
    @mitchy2699 5 лет назад +127

    Help I dont understand anything and tomorrow is the test

    • @aidan7618
      @aidan7618 5 лет назад

      did you pass?

    • @mitchy2699
      @mitchy2699 5 лет назад +15

      70/100 (If I got less than 70 I wouldn't pass)

    • @aidan7618
      @aidan7618 5 лет назад

      @@mitchy2699 good job.

    • @salvadoreanvro3254
      @salvadoreanvro3254 5 лет назад +1

      @@aidan7618 i only did two questions hopefully my teacher let me finish tomorrow.

    • @ever4534
      @ever4534 4 года назад +2

      @@mitchy2699 65 and above is passing for me

  • @beandryl_
    @beandryl_ 2 года назад +3

    getting ready for that test tomorrow on multiplying, adding and subtracting radicals, thank you for your radical videos. :)

  • @brianmclogan
    @brianmclogan  11 лет назад +6

    We will get to that this year, but you will have to search my channel to see if I have any previous videos on it

  • @jarjarbinks1123
    @jarjarbinks1123 5 лет назад +50

    2019 anyone

  • @capncmonkey3261
    @capncmonkey3261 3 года назад

    Very helpful but since I’m doing this with variables and exponents it gets a little confusing, like how you multiply the roots together but if they have a variable in it, do you put a x^2 next to it then factor out the x^2 out of the root?

  • @user-tz4hk2cs6r
    @user-tz4hk2cs6r 5 лет назад +6

    This was really helpful! Thank you so much!!

  • @practicetypingmc
    @practicetypingmc 2 года назад +1

    I am going to be 100% real with you all. This channel is probably the best thing that ever happened to me in High School. Geometry sucks but this channel makes it better somehow. Thanks Brian McLogan. Keep on teaching ♥

  • @jacobdouglasswalker3148
    @jacobdouglasswalker3148 3 года назад +1

    Thank you for the help Mr. McLogan

  • @lovingthatBLUE
    @lovingthatBLUE 12 лет назад +6

    thanks bro this is helpful i have a test on this tomorrow

  • @Gexxesis
    @Gexxesis 2 года назад +1

    i cant explain how grateful i am for this guy, he is such a lifesaver omg

  • @sophia-rv9wq
    @sophia-rv9wq 5 лет назад +3

    THANK YOU SO MUCH!!! Hopefully I pass my test tomorrow!!

  • @tsurek
    @tsurek 5 лет назад +2

    Amazing - beautiful. I love Math! Thank you from 2019

  • @brianmclogan
    @brianmclogan  12 лет назад +9

    @stsgamer thank you, I make them for you guys!

  • @factsayer6168
    @factsayer6168 3 года назад +2

    You really helped me with my school work honestly Thank you and keep making more~!

  • @luciajno-baptiste8123
    @luciajno-baptiste8123 4 года назад +1

    Thank you! You explained it so well!

  • @nihaalbhullar4684
    @nihaalbhullar4684 4 года назад

    Thanks for the help, Mr. McLogan

  • @avalonking4500
    @avalonking4500 3 года назад +1

    this man has saved my life

  • @gabbymurray3819
    @gabbymurray3819 6 лет назад +20

    thank you so much omg!! gonna save my life tomorrow on my test ahhh

  • @lindsay1264
    @lindsay1264 3 года назад +2

    your videos save me, you're a great teacher !!!!! stay safeee

  • @danie8944
    @danie8944 3 года назад +2

    This guy has carried me through online math

  • @brockkitchen4781
    @brockkitchen4781 3 года назад

    Thank you for making this video, especially with COVID-19 you really helped me with this video.

  • @sameerahscloset1424
    @sameerahscloset1424 5 лет назад +1

    Thank you !

  • @jackmcfadden24
    @jackmcfadden24 3 года назад

    You a real one Brian 🙌

  • @stsgamer
    @stsgamer 12 лет назад +1

    great! thanks so much!
    keep doing it

  • @jaydamillspaugh8388
    @jaydamillspaugh8388 3 года назад

    thank you sm, you are saving my math grade because my teacher doesn't teach. she puts notes up on the board and thats it. so thank you.

  • @jp_vivee
    @jp_vivee 5 лет назад

    Great help! Thank yu!

  • @lindasupa1806
    @lindasupa1806 3 года назад +1

    Thank you so helpful😊

  • @chrisboulden3086
    @chrisboulden3086 5 лет назад +2

    Helped me pass my final thank you sir

  • @chocolatetylenol9003
    @chocolatetylenol9003 2 года назад +2

    explained it much better than my teacher, I wasnt listening to my teacher though.

  • @alecddaniels
    @alecddaniels 3 года назад

    This guy is the best!!

  • @kerenm2188
    @kerenm2188 3 года назад

    I appreciate this man

  • @TheScaredLittleScholar
    @TheScaredLittleScholar 3 года назад +1

    Can you do something on exponent laws and fractions with exponents?

  • @rylanfulton2347
    @rylanfulton2347 6 лет назад +4

    thnx Mr.McLogan that helped alot. pleasae come be my math teacher

  • @tere1019
    @tere1019 3 года назад

    Thank you ❣️

  • @latihankalkulus
    @latihankalkulus Год назад

    Thank you🙏👍

  • @Darffone
    @Darffone 6 месяцев назад

    Thanks for a quick refresher to unclog my brain while i figure out this puzzle.

  • @juli-fz7ep
    @juli-fz7ep 6 лет назад +3

    keep up the good work

  • @lchazea.m.9192
    @lchazea.m.9192 5 лет назад +1

    I have questions
    Pls answer :)
    When you add radicals can you ADD both radicals even if both radicals are not the same number?
    And is it only MULTIPLYING radicals you can be allowed to multiply two different radicals?

    • @brianmclogan
      @brianmclogan  5 лет назад +2

      try it sqrt(4) +sqrt(9) =/ sqrt(13) if you simplify you see that sqrt(4)+sqrt(9)=2+3=5 =/ sqrt(13) try it with multiplication/division and you see it works, not addition/subtraction

    • @lchazea.m.9192
      @lchazea.m.9192 5 лет назад +1

      @@brianmclogan so youre saying that you cannot add and subtract different radicals (prime numbers) but you have to simplify it first..... and that you can only multiply and divide two different radicals?

  • @agustindelavega6177
    @agustindelavega6177 5 лет назад +1

    You saved my life :)

  • @neyocania120
    @neyocania120 2 года назад +2

    This was ten years ago wow still helped thank you i need this

  • @deezdeez9083
    @deezdeez9083 Год назад

    Hello from Albania.Thanks a lot!!!!

  • @sanctatwo0366
    @sanctatwo0366 5 лет назад

    well then what if you are multiplying two binomials and each term is a radical in the binomials that have to be multiplied together using foil and so the only thing you can do is solve each one individually so you can use foil?

  • @melzepe4951
    @melzepe4951 3 года назад +10

    I'm studying in during lunch because I have a test in a few minutes help

    • @noahgodhard8826
      @noahgodhard8826 3 года назад +1

      howd did you do?

    • @noahgodhard8826
      @noahgodhard8826 3 года назад +1

      @@hello-ek6rt ME TOO just finished my math finial 😭😭😭

    • @melzepe4951
      @melzepe4951 3 года назад

      @@noahgodhard8826 Lmao I fucking failed 😂

  • @twinkletwinklelittlefart4629
    @twinkletwinklelittlefart4629 3 года назад

    Legit life saver

  • @yujiubando698
    @yujiubando698 2 года назад +1

    Thanks.... surprised that this was uploaded 11 years later

  • @sxdium_8213
    @sxdium_8213 3 года назад

    This guy is a legend

  • @ygo_trey9753
    @ygo_trey9753 5 лет назад

    Thanks !

  • @youtubeusername2836
    @youtubeusername2836 3 года назад

    Thanks, this is really helpful. Math is just as hard now as it was then lol

  • @MYTHOMINHTRAN
    @MYTHOMINHTRAN 7 месяцев назад

    Teacher Brian explain the matter looks very much like how I taught my child how to drive a bicycle! Thank you Sir!

  • @luisvalle4736
    @luisvalle4736 3 года назад

    I'm really sorry for bothering. But I need help with a question similar to this one...It's √6*√48. I'm really struggling with it

  • @AdaWongFanofc
    @AdaWongFanofc 6 лет назад +3

    I PAY for college classes that have terrible explanations...thank you Mr. McLogan!

  • @twiceeitzyy4419
    @twiceeitzyy4419 3 года назад

    hi! tysm for this!!

  • @annewithane4253
    @annewithane4253 5 лет назад +7

    "Where's my marker?"

  • @ProdNorma
    @ProdNorma 4 года назад +1

    HELP, WHAT IF ONE OF THE RADICALS HAS A VARIABLE BUT THE OTHER DOESN'T LIKE the square root of 7 times the square root of 7x ?

  • @kelly-io3sn
    @kelly-io3sn 4 года назад

    this helped me ty

  • @ripdash9391
    @ripdash9391 3 года назад

    thank you

  • @sarvjitkaur3779
    @sarvjitkaur3779 3 года назад

    2020 anyone??
    Nice video👍👍 cleared my concept

  • @mortadaal-iraqi8432
    @mortadaal-iraqi8432 5 лет назад

    I am an Arab and benefited from the lesson thank you

  • @alfonso.rubio15
    @alfonso.rubio15 4 года назад

    Thank you

  • @DontAskMewhy-cj4sn
    @DontAskMewhy-cj4sn 5 лет назад +1

    Thanks so much

  • @janemorrow
    @janemorrow 5 лет назад

    Thankyou 😊👌

  • @rhanecampbell6212
    @rhanecampbell6212 4 года назад

    can we just stop and appreciate his merch

  • @bwzboddah5219
    @bwzboddah5219 6 лет назад +2

    This is all cool, Brian, but like, how do you multiply a radical by an exponent-ed variable?

    • @brianmclogan
      @brianmclogan  6 лет назад +3

      you can convert the radical to a rational power and then use the properties of exponents as long as they have the same bases

    • @bwzboddah5219
      @bwzboddah5219 6 лет назад +2

      Brian McLogan Dude, you are a literally life-saver, thanks so much.

    • @brianmclogan
      @brianmclogan  6 лет назад +3

      cheers!

  • @pureli418
    @pureli418 2 месяца назад

    Yayy thank you

  • @khushijat2186
    @khushijat2186 3 года назад

    Thanks sir

  • @daisycarder9423
    @daisycarder9423 6 лет назад +5

    You should make a video on math test anxiety. But you are doing great, thank you!

    • @brianmclogan
      @brianmclogan  6 лет назад +3

      you are right I should, thanks for the idea

  • @connormariner7108
    @connormariner7108 6 лет назад +1

    What about multiplying 3√7 x √4 (Not the actual answer but problems like this )

    • @brianmclogan
      @brianmclogan  6 лет назад +1

      well sqrt 4 is 2 so just multiply them answer: 6root7

  • @Riona.2
    @Riona.2 5 лет назад +1

    2019, freshman taking like junior classes. Not my fault it’s my homeschool curriculum. I want to know what grade y’all learn how to factor polynomials and stuff like that. Mr mclogan has helped me through a bit and tbh i rather watch these videos than watch my algebra class. Going on to English, I take english III and I’m a freshman. My cousin is a junior and she is taking English III. I just wanna know what grade everyone is learning different things in math so please if you’d like, write your grade and what math you do down below. Thank you :)

    • @cz538
      @cz538 5 лет назад

      8th algebra 1

  • @drumtwo4seven
    @drumtwo4seven 7 месяцев назад

    Damn Good 👍

  • @badigagyi5389
    @badigagyi5389 6 лет назад +2

    Thank you very much haha now I get it😊

  • @kansasbrown2201
    @kansasbrown2201 Год назад

    I have a method where you multiply the insides so 18x14 wich is 252 and then you birthday cake it 3x2 is 6 so six is on the outside and you have a leftover 7 so i got the same answer. I hate on quizes they make you do it a certain way. Thanks for the video by the way it helped me learn the other way to solve :)

  • @MeltingPotYT
    @MeltingPotYT 2 года назад

    Bro is single handedly saving me from failing

  • @juankellermann9013
    @juankellermann9013 3 года назад

    What if there is a number outside the square root symbol

  • @tristanbailey8865
    @tristanbailey8865 5 лет назад +1

    My teacher is a clown. Thanks for clarifying this for me.

  • @troymitchell6187
    @troymitchell6187 7 лет назад +52

    well you got me confused

    • @brianmclogan
      @brianmclogan  7 лет назад +14

      sorry about that, is there a point in the video I lost you or do you have any questions I can help you out with?

    • @2GZ_TV
      @2GZ_TV 6 лет назад +1

      Lmaooooooooo

    • @cesiamaria7025
      @cesiamaria7025 5 лет назад +1

      Troy Mitchell v

    • @atikshsingh1598
      @atikshsingh1598 4 года назад +2

      been 2 years, you good bro

    • @Kelsang01
      @Kelsang01 4 года назад +24

      It is rumored that to this day, Troy Mitchell still doesn't understand how to multiply radicals and then simplify them.

  • @BackWoodsCase
    @BackWoodsCase 5 лет назад

    God bless

  • @spiderlink7666
    @spiderlink7666 6 лет назад

    Did you cancel out the second 3, or....?

  • @spicyskippy783
    @spicyskippy783 4 года назад +1

    Thank you so much- 9 years later

  • @alexisholloway9815
    @alexisholloway9815 3 года назад +1

    you're basically my teacher at this point....

  • @iizziib6613
    @iizziib6613 5 лет назад +3

    Wait I don’t understand how you got a 3•2 before the arrow

    • @ChewyTheCookie
      @ChewyTheCookie 4 года назад +1

      Lana Del Sirena I know this is late but I believe he factored the 4 so that’s how he got a 2.

    • @kirklurkpu4470
      @kirklurkpu4470 4 года назад +3

      The radical 9 turned to 3 when it got down because the square root of 9 is 3. Square roots are the outcomes of a number when you multiply them to themselves. For example, like this one, 3x3 = 9, therefore 3 is the square root of 9. One more example is square root of 16, is 4, because 4x4 = 16.

  • @maggot7588
    @maggot7588 4 месяца назад +1

    I’m seriously not grasping this concept 😭🙏🏾I’m cooked bro

  • @samantha2afterwuat778
    @samantha2afterwuat778 2 года назад

    I LOVE YOUUUU

  • @agnesharley5655
    @agnesharley5655 5 лет назад +3

    i have a test today wish me good luck :)

  • @yo-Kai_
    @yo-Kai_ 3 года назад

    How did this 4 minute video teach me more than 3 9 minute videos could?

  • @victorianguyen3919
    @victorianguyen3919 6 лет назад

    So I had to solve, radical of 5 times radical of 8, I tried using ur method but I don’t get it it’s not working

  • @Whoknows-qb1ht
    @Whoknows-qb1ht 3 года назад +1

    I feel like an idiot thank you for saving my grade 🙏🙏🙏🙏

  • @user-tz4hk2cs6r
    @user-tz4hk2cs6r 5 лет назад +1

    I tried this method with the following example: √98 * √32 and I got 12√2. But my math teacher said that answer was 56. I'm sort of confused..

    • @jasrajsingh3532
      @jasrajsingh3532 5 лет назад

      Zulayho Omonova well if you do it the long way you can multiply 98x32 then you will get 3136 and then if you just put it in your calculator and ask for square root you should get 56

    • @jasrajsingh3532
      @jasrajsingh3532 5 лет назад

      Srry if it was a bit late lol

    • @jackdavis8596
      @jackdavis8596 5 лет назад

      √98 can be simplified to √7x √7x 2 x or 7√2. Then simplify √32 to √16 √2 or 4√2. Multiply them together: 7x4=28 and √2 x √2=2, so it's 28x2=56. Maybe you added 7 and 4?

    • @TheRazz1717
      @TheRazz1717 5 лет назад

      56 is correct. 98 = sr 2 × sr 49 and 32 = sr 2 x sr 16. Simply sq 2 x 7 and sq 2 x 4. Multiply like numbers 7 x 4 = 28 and sq 2 times sq 2 = 2. Simply 2 x 28 = 56, easy.