Introduction to special products of binomials | Algebra I | Khan Academy

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  • Опубликовано: 18 янв 2025

Комментарии • 127

  • @bryannguyen658
    @bryannguyen658 10 лет назад +84

    The method he is using is FOIL (First, Outer, Inner, Last)

    • @lamyaaa5003
      @lamyaaa5003 10 лет назад

      hrw

    • @HappyPlaysWasTaken
      @HappyPlaysWasTaken 3 года назад

      isnt that literally the exact same thing as the distributive property

    • @mahibhatt4011
      @mahibhatt4011 3 года назад

      Ok thanks

    • @captainbube1217
      @captainbube1217 2 месяца назад

      @@HappyPlaysWasTaken no its way more stupid and should be banned in schools.

  • @josea3300
    @josea3300 8 лет назад +43

    thanks man our teacher didn't really teach us this and still gave it for homework so thank you

    • @theoddpirate6695
      @theoddpirate6695 7 лет назад

      Jose A same
      Actually I wasn’t just listening ( cus we had to design our notebook so I was busy )

    • @fahadnasser2477
      @fahadnasser2477 2 года назад

      how r u doing now

  • @boardonfire4
    @boardonfire4 4 года назад +9

    dude this channel is like the only youtube channel to ever return value to its watchers i hop the tube pays u well khan u deserve every penny and then some

  • @unknownman6848
    @unknownman6848 2 года назад +3

    What my teacher teached us: 1+1=2
    Vs
    What coms in exam: (a+b)(a+b)

  • @screamingslave99
    @screamingslave99 14 лет назад +33

    i wish more teachers taught like this. the colors are awesome. its been a long time since i've been in school but this video is great! i wish i had this in school!
    keep up the good work sir!

    • @fahadalgharbe3881
      @fahadalgharbe3881 2 года назад

      Are you alive?

    • @whosfredol5194
      @whosfredol5194 2 года назад

      Oh, hello fellow student... it seems I was only a mere 2 year old when you commented this; I guess schools brings the internet from old of ages back thogethere.

    • @KokoBhoneMyat
      @KokoBhoneMyat 2 года назад

      @@whosfredol5194 u 13?

    • @the_rusty_potato2643
      @the_rusty_potato2643 Год назад

      No because 12+2 = 14. Not thirteen.

  • @aloha102805
    @aloha102805 4 года назад +34

    Who’s watching from 2020

  • @talyahany1751
    @talyahany1751 11 месяцев назад +1

    Thank u so much
    U explained what a teacher explains in like a month

  • @RobinUngureit
    @RobinUngureit 13 лет назад +2

    Thank you so much. I am currently going to an online college, and I haven't taken Algebra in years, watching you go through the problems enables me to better understand what it is that i am doing. thanks again =)

  • @Tehcarp
    @Tehcarp 14 лет назад +3

    Your use of colour is, in my mind, what stands out between your tutorials and those of others. This video is a good example of what works, though there could still be more colour used in a way that maintained the sensibility, and improved the understanding of students of the material.

  • @Zadoklives
    @Zadoklives 4 года назад +2

    Very easy my friend helped out a lot

  • @fionacelinesantos7413
    @fionacelinesantos7413 4 года назад +2

    Thank you Sir, this is very helpful for my algebra class

  • @Kris_toastttt
    @Kris_toastttt 12 лет назад +3

    In the beginning of the video i was like hold on!! But then i remembered i could pause the video lol XD

  • @carmeloramdath4899
    @carmeloramdath4899 4 года назад +2

    Taught me more than my teacher

  • @enaljgt3565
    @enaljgt3565 4 года назад +11

    My teacher told me to watch this...

  • @AMIELrenaissance
    @AMIELrenaissance 10 лет назад +4

    You're awesome.
    Thanks!

  • @archmode3235
    @archmode3235 2 года назад

    you're genuinely so helpful, thank you

  • @raphaelleahpar9216
    @raphaelleahpar9216 4 года назад +3

    Is this for 1st year highschool?

  • @trickshot8544
    @trickshot8544 Год назад +1

    thank you bro for teaching me when my math teacher lectured us on her cats

  • @Jere616
    @Jere616 11 лет назад +2

    2bx or not 2bx, that is the question!
    Nice video, brings back memories I forgot.

  • @elvimartinez5629
    @elvimartinez5629 4 года назад +1

    thanks man

  • @GrayXephyr
    @GrayXephyr 13 лет назад

    Good thing my teacher had your website on the whiteboard for several weeks...

  • @thatredfoxwips8757
    @thatredfoxwips8757 3 года назад +4

    2021, wassup

  • @joshualee3054
    @joshualee3054 10 лет назад +2

    Thanks for the tip

  • @airamaedanicasogo-an1632
    @airamaedanicasogo-an1632 6 лет назад +1

    Very educational! thanks! :)

  • @DBRAH_
    @DBRAH_ 9 лет назад +5

    Wow thank you soo much this was our next lesson and since now that I learned it in advance I probably wont have any problems with catching up in my class 😁😁 thanks so much

  • @joshk5507
    @joshk5507 7 лет назад +1

    i love you Sal, ur my hero

  • @0981vince
    @0981vince 6 лет назад +2

    Thank god i thought i had no chance of learning this

  • @onewlf8938
    @onewlf8938 5 лет назад +1

    thanks khan academy

  • @yazlinne50
    @yazlinne50 11 лет назад +18

    FOIL !

  • @jiyonaaa
    @jiyonaaa 4 года назад +4

    I love FOIL METHOD

  • @mustaferoble
    @mustaferoble 5 лет назад

    thanks you have more information

  • @johnralph8213
    @johnralph8213 10 лет назад +14

    Or ...
    Step 1 : Square of its first term .
    Step 2 : Product of its terms.
    Step 3 : Square of its last term.
    Simple .

    • @Pikachu-ho8rp
      @Pikachu-ho8rp 7 лет назад +4

      nope.
      square the first term.
      product of both terms TIMES TWO.
      square the last term.

    • @hexagon1421
      @hexagon1421 6 лет назад +2

      You mean FOIL?

  • @mattc7328
    @mattc7328 8 лет назад +1

    Where's the video on Factor Special Products (Basic)?
    Example: x​2​​−d=(x+6)(x+c)

  • @eddie1bmx
    @eddie1bmx 6 лет назад +1

    this video of 10 minutes is better than my professor of math like suscribe.

  • @markvincentordiz
    @markvincentordiz 3 года назад

    although the same result, 2(3x)(-7) = -42x, i was taught 2[(3x)(-7)] = -42x.

  • @taylorstan8411
    @taylorstan8411 7 лет назад

    thanks
    keep sharing your knowledge
    there are many people who needs your hlp keep doing it god bless

  • @beastbogs6133
    @beastbogs6133 3 года назад +1

    2021 gang

  • @aiyasiamanalo-mr7rx
    @aiyasiamanalo-mr7rx 11 месяцев назад

    Its just like polynomials but instead its binomials which you need to multiply?

  • @xxgamer_lucyxx1214
    @xxgamer_lucyxx1214 3 года назад

    Still don't get it but I'll try

  • @allyzamariecalsado1847
    @allyzamariecalsado1847 8 лет назад +1

    how about this cab you solve it (2a-7)(2a-7)

    • @humzatariq1604
      @humzatariq1604 7 лет назад

      2a(2a-7) = 4a^2 - 14a
      -7(2a-7) = -14a + 49
      Therefore; 4a^2 - 14a -14a +49 (or 7^2)
      = 4a^2 -28a + 7^2

  • @JendieEUrcia
    @JendieEUrcia 4 года назад +1

    Good Day ! Can I ask permission to use this video on my module content. I wanted to attach the link so that my student can access it and watch for them to have additional examples and explanations. Hope you can notice my comment. Thank you and God Bless!

  • @amyvergara6063
    @amyvergara6063 5 лет назад +2

    Now i can pass the exam

  • @fate2019
    @fate2019 6 лет назад

    there are easier methods especially for special products but anyways, thanks!

  • @patriciamaeperez7168
    @patriciamaeperez7168 9 лет назад

    How about this.... (3-4m)² , (8-3x) (8+3x) , and (2t-1) (t+5) ??
    PS: Can you solve this.. pretty please.??

  • @randomperson0027
    @randomperson0027 Год назад

    Why do this and not x² + 81?

  • @bestseedever2104
    @bestseedever2104 3 года назад

    1:48 it’s actually 81x^2

  • @GoodLifeWord
    @GoodLifeWord 6 лет назад

    ı am turkey

  • @terenzbc2559
    @terenzbc2559 8 лет назад +1

    You cn also just 9x^2+2(x)(9)+9^2

  • @juandiegotorres4184
    @juandiegotorres4184 7 лет назад

    Hola

  • @ineedmymoneyback3390
    @ineedmymoneyback3390 8 лет назад +1

    My teacher speaks math...
    how?

  • @steffen441
    @steffen441 6 лет назад

    FOIL METHOD AND VERTICAL METHOD AND HORIZONTAL METHOD...

  • @ande.andecarlogermo
    @ande.andecarlogermo 2 года назад

    Aww

  • @bloroxcleach896
    @bloroxcleach896 6 лет назад

    You can use punnet square method for the first problem.

  • @grinchparody660
    @grinchparody660 6 лет назад

    sal is on tv

  • @christianshaw6259
    @christianshaw6259 11 лет назад

    First
    Outer
    Inner
    Last

  • @MrSmf500
    @MrSmf500 13 лет назад

    @kabooski First Out In Last

  • @elz1167
    @elz1167 6 лет назад +4

    hi nerds

  • @kenvincent6829
    @kenvincent6829 7 лет назад

    foil method will do

  • @salmaalmehairbi2296
    @salmaalmehairbi2296 7 лет назад +2

    I need a vid about special products of polynomials😭

    • @zapxcero
      @zapxcero 7 лет назад

      it's on the website khanacademy search for it

  • @evo3_fanboy345
    @evo3_fanboy345 4 года назад +1

    joke lang

  • @kabooski
    @kabooski 14 лет назад +2

    F.O.I.L

  • @zae4519
    @zae4519 4 года назад

    Dc

  • @Mobystopmotion
    @Mobystopmotion 5 лет назад +1

    You could literally put it in a punnet square lol

    • @spektriye
      @spektriye 4 года назад

      yeah then just add

  • @DeraySEXtonn
    @DeraySEXtonn 13 лет назад +1

    FOIL FTW!

  • @kishorkumarchaudhury7912
    @kishorkumarchaudhury7912 2 года назад

    From2022

  • @kishorkumarchaudhury7912
    @kishorkumarchaudhury7912 2 года назад

    I am

  • @sbxdization
    @sbxdization 7 лет назад

    how do you do [x+5] [x-7]

  • @eugeniasto.domingo6412
    @eugeniasto.domingo6412 11 лет назад +1

    WHAT THE HELL FOIL -_-

  • @allisonsmith7636
    @allisonsmith7636 7 лет назад

    How come the FOIL method wasn't used?

    • @Mark-pd8eb
      @Mark-pd8eb 7 лет назад

      Allison Smith He did. He just went STEP BY STEP to further clarify what your multiplying.

  • @frozenfishtv7992
    @frozenfishtv7992 6 лет назад +1

    Stop repeating words bro :3

  • @mystque8754
    @mystque8754 5 лет назад

    what if its 20pm + 4n² + 20pm
    will it be 44 n²pm²??

  • @kaceackerman443
    @kaceackerman443 7 лет назад +1

    help me please ..please
    how to solve this?
    (a-11)²
    (2b+6)²
    (3a²b-2b)²
    (3/2mn+2)²
    [(x+1)²-5)]²

  • @minkihairoil
    @minkihairoil 7 лет назад +1

    The last example you did was too fast and didn't make sense [the (a+b)(a-b)]

  • @reallynigga2049
    @reallynigga2049 6 лет назад +1

    Welcome to college😂

    • @forthelols552
      @forthelols552 6 лет назад

      Hey Whatssup! This is grade 10 bud

    • @diya4822
      @diya4822 6 лет назад +4

      @@forthelols552 Whoops! Seventh grade for me 😏😂

    • @reallynigga2049
      @reallynigga2049 6 лет назад

      For the lols... I'm only grade 8😂

    • @grinchparody660
      @grinchparody660 6 лет назад

      u learn this in 8th grade

  • @maryamahmad9762
    @maryamahmad9762 8 лет назад

    how do you do this? 4(x+6)(x−5)

    • @squareball7017
      @squareball7017 8 лет назад

      x2 + 1x - 30
      x2 = x squared

    • @someoneelsewhere9519
      @someoneelsewhere9519 8 лет назад

      Joker 4life associative property. distribute the 4 among the first binomial, then distribute that amongst the second binomial

    • @humzatariq1604
      @humzatariq1604 7 лет назад

      4(x+6)
      (4x+24) (x-5)
      4x(x-5) = 4x^2 -20x
      24(x-5) 24x - 120
      = 4x^2 - 20x +24x - 120
      = 4x^2 +4x -120

  • @maeannhilario3041
    @maeannhilario3041 7 лет назад

    this is literally just the FOIL method in a different name

  • @theoddpirate6695
    @theoddpirate6695 7 лет назад

    Wtf is Abab method?!?