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Simplify a radical expression with variables

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  • čas pƙidĂĄn 6. 12. 2011
  • 👉 Learn how to simplify the square root of an expression. The square root of an expression is an expression which will multiply itself twice to give the original expression. To simplify the square root of an expression, we decompose/factor the expression into a product of two terms that are the same. The term of the product is the required square root.
    When the radical cannot be conveniently decomposed/factored into two same terms, we factor the radical into a product of a perfect square and a non-perfect square. Using the product/quotient rule of radicals the perfect square is evaluated and the non-perfect square is left as a radical.
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    Organized Videos:
    ✅How To Simplify a Radical Expression
    ‱ How To Simplify a Radi...
    ✅How To Simplify The Cube Root of a Number
    ‱ How To Simplify The Cu...
    ✅How to Simplify The 4th Root of a Number
    ‱ How to Simplify The 4t...
    ✅How to Simplify the Square Root of a Number
    ‱ How to Simplify the Sq...
    ✅How to Simplify The Square Root of a Number with Coefficient
    ‱ How to Simplify The Sq...
    ✅How to Simplify Expressions | 4th Root
    ‱ How to Simplify Expres...
    ✅How to Simplify Radical Expressions | 5th Root
    ‱ How to Simplify Radica...
    ✅How to Simplify Radical Expressions | Cube Root
    ‱ How to Simplify Radica...
    ✅How to Simplify Radical Expressions | Learn About
    ‱ How to Simplify Radica...
    ✅How to Simplify Radical Expressions | Easy
    ‱ How to Simplify Radica...
    ✅How to Simplify Radical Expressions | Hard
    ‱ How to Simplify Radica...
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    đŸ‘šâ€đŸ‘©â€đŸ‘§â€đŸ‘§ 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.freemathvi...
    #Simplifyradicals #radicals #brianmclogan

Komentáƙe • 323

  • @brianmclogan
    @brianmclogan  Pƙed 2 lety +30

    More Examples Simplifying Radicals - czcams.com/play/PL0G-Nd0V5ZMp53jELWvQp4KFgD-pLmQ0Q.html

    • @allahiseternal8422
      @allahiseternal8422 Pƙed 2 lety +3

      I give a big fuckin like to this video

    • @LittleRapGuy
      @LittleRapGuy Pƙed 2 lety

      good video

    • @californiadreamin8423
      @californiadreamin8423 Pƙed rokem +1

      Hello Brian, from across the pond. Excellent video. I’m beginning to realise that manipulation of these square root problems, was a major gap in my knowledge 55 years ago !! when I did my O and A levels and onto Engineering at Uni
..or perhaps it’s my memory 🙀
      I find it very straightforward and yet
..

  • @abhinavbaral204
    @abhinavbaral204 Pƙed 5 lety +1296

    I do better watching 2 min of this than learning for 45 min in my class. Thank you

  • @definitelynotwalter
    @definitelynotwalter Pƙed 3 lety +344

    9 years later and still a saviour.

  • @kryo5579
    @kryo5579 Pƙed 5 lety +432

    I'm watching this right before my test wish me luck lol

  • @chloe._.ey21
    @chloe._.ey21 Pƙed 5 lety +426

    i srsly was born to not understand math :(

    • @elroe327
      @elroe327 Pƙed 4 lety +8

      Same

    • @cerareid240
      @cerareid240 Pƙed 4 lety +4

      CHOGIWAADANABEONENEUKKYEO same

    • @gracietara8723
      @gracietara8723 Pƙed 4 lety +4

      CHOGIWAADANABEONENEUKKYEO sammmeeee like bruhhh

    • @Godakuri
      @Godakuri Pƙed 4 lety +2

      What's so hard to understand. Explain and I'll explain it to you

    • @Godakuri
      @Godakuri Pƙed 4 lety +23

      This video was a bit more confusing than the others. But you basically want to find two numbers that go into 48. That would be 16 and 3
      Square root of 16 is 4, and square root of 3 cannot be simplified. So, 4 would go on the outside of the square root, while 3 stays inside
      4 × sqrt 3

  • @lucablue8126
    @lucablue8126 Pƙed 6 lety +168

    Do you film your lessons as a teacher then post them here? Because that’s brilliant.. never worry about a sick day again.

    • @brianmclogan
      @brianmclogan  Pƙed 6 lety +40

      yes I do Luca!

    • @cydra-evolution5623
      @cydra-evolution5623 Pƙed 5 lety +15

      @@brianmclogan bro just cut out parts of the video after you record so students arent afraid of asking questions

    • @ZikzakHD
      @ZikzakHD Pƙed 5 lety +5

      @@brianmclogan Hey. I'd like to study in your high school is that possible ?

    • @rogerbenson9544
      @rogerbenson9544 Pƙed 3 lety +4

      This aged well haha. This is how everything was done for the school shutdowns

  • @kokokoko3936
    @kokokoko3936 Pƙed 4 lety +22

    Our teacher literally makes us figure everything by ourselves as if we know wtf to do

    • @kokokoko3936
      @kokokoko3936 Pƙed 4 lety

      this user can't be reached Okay...but this is different. He gives us something we don’t know how to do and makes us do it. If we say we don’t know what to do he tells us to look it up.

    • @Alex-rx2cm
      @Alex-rx2cm Pƙed 2 lety +2

      I totally understand what ur talking about. Some teachers just aren't meant to be teachers. Some should have retired already because they left their patience in 1765

  • @alexshuparskyy6052
    @alexshuparskyy6052 Pƙed 6 lety +224

    Just got into 8th grade and i can't understand crap its just so hard for me

    • @brianmclogan
      @brianmclogan  Pƙed 6 lety +124

      take a breath and slow done, this is not a race, you can understand this stuff, practice and give yourself time

    • @BigAirr.
      @BigAirr. Pƙed 5 lety +4

      Feel you

    • @aedanmayschak5827
      @aedanmayschak5827 Pƙed 5 lety +7

      Same with me but I'm a sevie in accelerated

    • @blkout6202
      @blkout6202 Pƙed 5 lety +2

      Im in honors math in 7th grade. So I'm learning this stuff

    • @Ry_TSG
      @Ry_TSG Pƙed 5 lety +1

      legit ness same. I took algebra when I was in seventh grade as well.

  • @sinkidonk8259
    @sinkidonk8259 Pƙed 4 lety +56

    I think this had been the best video I found yet on simplifying square roots with variables, thank you I am trying to study up for a math placement test for college

  • @23vbg
    @23vbg Pƙed 3 lety +23

    I do so much better in class because of your 5 minutes videos than sitting for 1 hr in class. Thank you

  • @BigAirr.
    @BigAirr. Pƙed 5 lety +65

    My man you have saved me again

  • @vishnukikkeri9187
    @vishnukikkeri9187 Pƙed 5 lety +88

    I need you as my math teacher

  • @wicked_mia
    @wicked_mia Pƙed 4 lety +80

    When you’re watching this 5 minutes before a quiz 😎 summer school gangđŸ˜ŒâœŒđŸŒ
    Edit: I got an A on the quiz!!!😁😁

  • @Insaneflightreacts
    @Insaneflightreacts Pƙed rokem +5

    11 years later and this dude is saving me the night before finals

  • @eunosmedia90
    @eunosmedia90 Pƙed 3 lety +12

    This dude explains it better than alot of teachers ive had thank you

  • @tylerm3m3
    @tylerm3m3 Pƙed 4 lety +6

    you are a saint. bless your soul. learned more watching this than in class.

  • @poochi7587
    @poochi7587 Pƙed 2 lety +7

    Still didn't get it

  • @marrinarice8658
    @marrinarice8658 Pƙed 2 lety +3

    math has ALWAYS been one of my easiest/favorite courses, but i have a horrible precalc. teacher this year. he rushes through the steps and he never likes to help with the questions we have. he’ll just say “go watch the video on schoology, but it’s just a video of the notes we did and the explanations on how to do the problems are still weak. then on the homework we’ll have problems with more steps and nothing in the notes helps me. I’ve never had a B- in math until this year and it’s crazy to know that everything matters on how your teacher presents the material to the class.

  • @ImLOL006
    @ImLOL006 Pƙed 3 měsĂ­ci

    Thanks a lot! You are out here SAVING LIVES istg!

  • @nikolaskatanjian4226
    @nikolaskatanjian4226 Pƙed 6 lety +91

    Thanks to your videos I got a B on my finalđŸ‘đŸŒđŸ€©

    • @brianmclogan
      @brianmclogan  Pƙed 6 lety +32

      awesome! Congrats to you Nikolas. Happy to be there for you

    • @official_lissana2358
      @official_lissana2358 Pƙed 5 lety +31

      Don’t call this person stupid he tried very hard and a B is not bad that’s actually an 80 Ű§Ù„Ű±ŰŻŰ§Űčي Ù‚Ù‡Ű±Ù‡Ù…

    • @heshamhesh2516
      @heshamhesh2516 Pƙed 5 lety +1

      Official_ Lissana k buddy

    • @kchen4896
      @kchen4896 Pƙed 5 lety +1

      Lol Ű§Ù„Ű±ŰŻŰ§Űčي Ù‚Ù‡Ű±Ù‡Ù…

    • @sharmilaallam3455
      @sharmilaallam3455 Pƙed 5 lety

      @@official_lissana2358 ssssss right

  • @tankuser4276
    @tankuser4276 Pƙed 3 lety +10

    I dunno why but I smile and sometimes laugh when I see math teachers taking their time thinking. I could visualize their brain sweating from thinking too hard lol

  • @manuelmojica8009
    @manuelmojica8009 Pƙed 5 lety +10

    You are a lifesaver. We're taking a quiz on this on Monday, and this video prepared me a lot.

  • @user-bl6ux4jt6m
    @user-bl6ux4jt6m Pƙed 4 lety +9

    my final is in 3 hours and you're a quick life saver for all the concepts im still confused on thank you!!!!

  • @brianmclogan
    @brianmclogan  Pƙed 11 lety +5

    If you sign in to receive my newsletter, You will receive an email from me with my ebook. You can simply respond to that email. I do not want to post the address on CZcams for sake of spam

  • @Sultan_A
    @Sultan_A Pƙed 4 měsĂ­ci +1

    🌟🌠 Very Good, Brian McLogan, Keep It Up 🌠🌟

  • @jacobdoolittle2044
    @jacobdoolittle2044 Pƙed 4 měsĂ­ci

    Currently Active duty taking online college, pre-calculus was killing me until I came across your videos! THANK YOU!

  • @williamestes4169
    @williamestes4169 Pƙed 3 lety +2

    You must be praised. I have been looking for a good explanation for hours!!!!! That was what I was looking for thanks. Subbed!

  • @1Giorno_1cup
    @1Giorno_1cup Pƙed 4 lety +9

    Bruh wish I had you as my video teacher, my video teacher is just like *writes down and goes over one problem and expects you to know it*

  • @laura-yh6fv
    @laura-yh6fv Pƙed 4 lety +10

    THANK you omg I can’t do math for shit and I’m in 11th grade....going into consumer math

  • @RiseAndRenewtoday
    @RiseAndRenewtoday Pƙed 10 měsĂ­ci +1

    11 years later its even better

  • @Azooz70000
    @Azooz70000 Pƙed 4 lety +2

    We learn from you from Saudi Arabia teacher. Thank you❀

  • @itslululemons6949
    @itslululemons6949 Pƙed 3 lety +2

    Watching this right before my test :/! Thanks for the help :)

    • @izzyyy9471
      @izzyyy9471 Pƙed 3 lety +2

      Did you do good?

    • @itslululemons6949
      @itslululemons6949 Pƙed 3 lety +2

      @@izzyyy9471 i got an 100 :)

    • @izzyyy9471
      @izzyyy9471 Pƙed 3 lety +2

      @@itslululemons6949 Yayyy! :D

    • @Dr_N0
      @Dr_N0 Pƙed 2 lety

      @@itslululemons6949 i hope u fail all your classes from now on

  • @bzgamer41
    @bzgamer41 Pƙed 5 měsĂ­ci

    I have a test on radicals and inverses tomorrow. this helped!!!

  • @thebestking4615
    @thebestking4615 Pƙed 2 lety +1

    This guy is a legend! Thanks so much!

  • @skyzlar
    @skyzlar Pƙed rokem

    Your videos have saved me- I have a 90 minute algebra class and I’ve learned nothing this year so I have to go home and look stuff up on CZcams.

  • @asiaf4914
    @asiaf4914 Pƙed 3 lety +2

    THANK YOU. idk why i cant understand what my professor is saying, I just couldn't get it but this really helped a lot. THANK YOU!

  • @WeHateAjay
    @WeHateAjay Pƙed 5 lety +21

    Ok I’m in 9th grade and I don’t understand how to do -21 radical 27x to the 9th power

  • @Rasqberries
    @Rasqberries Pƙed rokem

    11 years later and he’s still a legend

  • @KieraClements
    @KieraClements Pƙed 4 měsĂ­ci

    12 years later and still a god send

  • @j.h170
    @j.h170 Pƙed 3 lety +1

    I could go back and rewatch my school's original lesson recording, but it's 40 minutes long and I can't be bothered. This is easier and faster, thank you.

  • @brianmclogan
    @brianmclogan  Pƙed 11 lety +10

    yes.

    • @gabynevarez
      @gabynevarez Pƙed 5 lety

      At 5:04 why is there 2 y's in the index and then when you rewrite it theres only one y on the outside im confused

    • @victoria-cm6xm
      @victoria-cm6xm Pƙed 5 lety

      Gabriela Nevarez BC in algebra, yy would be considered as y^2. Which is y to the 2nd power. So he rewrote the problem so that the y is doubled up? Idrk how to explain it

  • @AbeWinkin
    @AbeWinkin Pƙed 6 měsĂ­ci

    This video has just helped me so much. It answered so many questions. Thanks, Brian.🙂 Now I will like and subscribe.

  • @llongdong
    @llongdong Pƙed rokem

    Outstanding!! You should be King of the World.

  • @loganayesh5472
    @loganayesh5472 Pƙed 3 lety +1

    It all makes sense now you’re a genius

  • @benbonczek
    @benbonczek Pƙed 3 lety +2

    Thank you so much!!

  • @BRYCEC00K
    @BRYCEC00K Pƙed rokem +1

    Thank you this video was helpful I was absent and this is what we we’re learning

  • @bootertrooper3596
    @bootertrooper3596 Pƙed 10 měsĂ­ci

    Mr clean comes in clutch every single time

  • @saka1029
    @saka1029 Pƙed 5 lety +16

    √(48xÂČy⁔) = 4 |x| yÂČ√(3y) You should consider the case of x

    • @shen144
      @shen144 Pƙed 4 lety

      I'm not sure if they have considered domains yet

    • @kodyhoriuchi172
      @kodyhoriuchi172 Pƙed 2 lety

      This would normally be a superfluous step because x is an unknown value. Unless it is equal to something, the unknown value x can remain unknown meaning it can be positive or negative when solving. For argument sake, we'll say that it is positive so it's less for us to do

    • @mohamedhelal8932
      @mohamedhelal8932 Pƙed rokem

      Right u r

  • @omaralhajji540
    @omaralhajji540 Pƙed 8 měsĂ­ci

    Bro ur such a life saver this one example helped more then a whole tutour

  • @kzcreationzmore
    @kzcreationzmore Pƙed 2 lety +1

    This guy explains in under 6 minutes what my math teacher hasnt been able to make me understand in 3 weeks

  • @luckymahir5615
    @luckymahir5615 Pƙed 8 měsĂ­ci

    the dude at the end "why didin't you do 4 * 12"😂

  • @merkow6711
    @merkow6711 Pƙed 4 lety +1

    This dude teaches better than my Math Teacher

  • @mars-nr8sx
    @mars-nr8sx Pƙed 8 měsĂ­ci

    i hate to say this bc my algebra 2 teacher is amazing, but this 2 minute clip taught me more than the hr and 15min lecture did😅

  • @alliegrace9948
    @alliegrace9948 Pƙed rokem

    this guy a life saver fr

  • @Goalafied
    @Goalafied Pƙed 2 měsĂ­ci

    I got a final tmw this is the only thing I don’t understand you just saved me 🎉🎉🎉

  • @arkan7rb
    @arkan7rb Pƙed 10 měsĂ­ci

    thank u sir
    greetings from Yemen

  • @InsighterofTech
    @InsighterofTech Pƙed rokem

    Thanks a lot man, really appreciate this video. I didn't understand what my algebra teacher was saying, or teaching at all. I finally understand now, so thank you again man.

  • @abbeyharris7967
    @abbeyharris7967 Pƙed 4 lety

    my final for math is tomorrow i don’t get any of the math so i keep looking it up on here and this guy keeps popping up. I get it my teacher doesn’t teach so thank you, be my teacher

  • @daynepiscione7748
    @daynepiscione7748 Pƙed 2 lety

    ive got a math test on radicals tmr... ill update this when i get the grade back :))

  • @ihearthazza4885
    @ihearthazza4885 Pƙed 3 lety

    dude this guy has helped me so much

  • @evanweglarz9778
    @evanweglarz9778 Pƙed 4 lety +1

    I don’t even try to pay attention in class anymore because it’s much easier just to watch these kind of vids

  • @Ramesh-ny2ik
    @Ramesh-ny2ik Pƙed 2 lety

    I want to have you as my teacher because my teacher never explains me the way you do like easy and faster way to learn

  • @lavaniadelrey2807
    @lavaniadelrey2807 Pƙed rokem

    You are a genius

  • @chinmayeekatti9781
    @chinmayeekatti9781 Pƙed 3 lety +4

    I’m watching this in the middle of my test please help me

  • @abenezerwondewosen
    @abenezerwondewosen Pƙed 8 měsĂ­ci

    wow teacher it was clear for me.

  • @emero3665
    @emero3665 Pƙed 4 lety +2

    At 4:44 how do you determine what variables go outside and what variables go in the inside?

    • @scaythe8858
      @scaythe8858 Pƙed 4 lety

      U must find the square root of each if it has square root then put the square root of it outside

    • @evanrichter8141
      @evanrichter8141 Pƙed 2 lety

      yex

  • @Moll662
    @Moll662 Pƙed 4 lety

    got my sat next month!

  • @mekhaterrence6246
    @mekhaterrence6246 Pƙed 2 lety

    Thanks brian mc logan

  • @troyacker5305
    @troyacker5305 Pƙed 3 lety +1

    I wish you were my teacher

  • @Siete77739
    @Siete77739 Pƙed 3 lety

    I forgot this was a video and I was about to ask a question

  • @elaine-mw7li
    @elaine-mw7li Pƙed 3 lety +2

    a life saver

  • @Taught_by_Tebza
    @Taught_by_Tebza Pƙed 4 lety +1

    You should indicate the element of principal root by putting x inside the absolute value symbol.

  • @thiagoamodio75
    @thiagoamodio75 Pƙed 4 měsĂ­ci

    helped a lot thanks

  • @user-ky5dy5hl4d
    @user-ky5dy5hl4d Pƙed 9 měsĂ­ci

    Yes, you can simplify the square root of 6 x 8 further; that is square root of 6 x 4 x 2. But if you want to use it is another thing.

    • @Alleksxx
      @Alleksxx Pƙed 8 měsĂ­ci

      You can also simplify the square root of 24 × 2 since 4 is multiply of 12 its also a multiply of 24 cause 12 is just half of 24. Also you would get the same numbers (6, 4 and 2)

  • @trustnallah8184
    @trustnallah8184 Pƙed 4 lety +1

    Please note that the square root of X squared = absolute value of X not just X. This is what many people don’t realize.

  • @Mariela0183aa
    @Mariela0183aa Pƙed 5 lety +2

    Can u be my teacher you explain so well 👏😭🙏

  • @kime394
    @kime394 Pƙed 4 lety +1

    what do you do if the number under the radical is a perfect square

    • @ItzDuhLag
      @ItzDuhLag Pƙed 4 lety +1

      Kimberly Emile no number will end up on the inside but it’s possible a variable will.

  • @vivienreysoriano1256
    @vivienreysoriano1256 Pƙed 3 lety

    Thank you so much!

  • @moelester5509
    @moelester5509 Pƙed 3 lety

    You are a great person

  • @tonyhaddad1394
    @tonyhaddad1394 Pƙed 3 lety

    Mann you have complicated the problem (its quite easy )

  • @serarose6876
    @serarose6876 Pƙed 4 lety +6

    Lmao I know that it’s taken from his last name but can we just talk about how his merch says Logang??? I can only think of Logan Paul

  • @laxzazazaza8278
    @laxzazazaza8278 Pƙed 2 lety

    These vids are god sends,after the online school year,i had no knowledge in my math class due to a mix of it being online,not being able to focus,and being a slacking son of a bitch,only passing thanks to random calculators online,as of current its nipping me in the ass,and yet,these videos are making it possible to survive in my class,and pass no less,despite basically missing a year of math,without these i woulda already been dead in the water man.

  • @longbluesquid
    @longbluesquid Pƙed 11 lety +1

    more on fraction form. like i know your denomanator cant be in radical is this correct?

  • @glowkami
    @glowkami Pƙed rokem

    why does every other video make us do like 500 other steps when we could literally do this LOL

  • @Zero-pz4ku
    @Zero-pz4ku Pƙed rokem

    why no absolute values around y?

  • @kimayliahenriques
    @kimayliahenriques Pƙed 2 lety

    thanks

  • @Rycethegoat
    @Rycethegoat Pƙed 4 lety

    You need to include the abs value bars in the case that x is a negative number

  • @sahir4341
    @sahir4341 Pƙed 4 lety

    THANK YOU SO MUCH

  • @richardslater677
    @richardslater677 Pƙed 2 lety +1

    To be honest, I think there is a debate to be had as to whether the result is simplified or more complicated!

  • @micsxii9150
    @micsxii9150 Pƙed 4 lety

    Thank you sir,im always watching ur videos😁

  • @karenina.l
    @karenina.l Pƙed 3 lety

    Shouldn't there be an absolute value sign around x when it comes out of the radical? Even index, even power inside, odd power outside.

  • @mdavis3262
    @mdavis3262 Pƙed 4 lety

    You sr are the GOAT

  • @anthonysafo473
    @anthonysafo473 Pƙed 4 lety

    Thank god for you

  • @marioivezaj154
    @marioivezaj154 Pƙed 4 lety

    boutta buy all ur merch

  • @justabunga1
    @justabunga1 Pƙed 4 lety +1

    What about the use of absolute values? Shouldn’t the answer be 4abs(xy^4)sqrt(3y)? abs stands for absolute value and start stands for square root. If you try to plug in negative numbers and write without absolute values, it would be undefined under the square root symbol. The absolute values can be negative, which would a positive number.

    • @asmodeuszdewa7194
      @asmodeuszdewa7194 Pƙed 4 lety +1

      You got it almost right.
      The answer should be:
      4abs(xy^2)sqrt(3y) which is equivalent to 4|x|y^2sqrt(3y)

  • @kaiaeuao
    @kaiaeuao Pƙed 3 lety

    THANK YOU OMG

  • @AdityaMishra-pm3xw
    @AdityaMishra-pm3xw Pƙed 4 lety

    Isn't the x supposed to be in absolute value notation?

  • @user-qr8co6hp4r
    @user-qr8co6hp4r Pƙed 3 lety +2

    I’m crying, why is math so hard

  • @sarahdeay7341
    @sarahdeay7341 Pƙed 5 lety +1

    What would I do with a problem like 'simplify the square root of 50xy^2'

    • @simone2603
      @simone2603 Pƙed 5 lety

      You do √50x^2y^2. First you find the square root of 50, which is 5 √2 . 5 √2 times x^2 times y^2 which is 5xy^2 √2

  • @05w47d
    @05w47d Pƙed 3 lety

    Yes I have many questions