China | Can you solve this? | A Nice Math Olympiad Algebra Problem

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  • Опубликовано: 19 янв 2024
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    How to solve this math problem
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Комментарии • 29

  • @theLordsboy
    @theLordsboy 6 месяцев назад +3

    So precise and orderly. Really help this 74 year old to keep his brain percolating. Thanks!

    • @VestalNumbre
      @VestalNumbre 6 месяцев назад

      Imagine everlasting life and what you personally doe ? This will give you an idea 💡 on how to get it
      + 16 All Scripture is inspired of God+ and beneficial for teaching,+ for reproving, for setting things straight,+ for disciplining in righteousness,+ 17

  • @user-qz3tv5rh2qhz3tv5
    @user-qz3tv5rh2qhz3tv5 6 месяцев назад +2

    красиво решает как стихи пишет, с удовольствием смотрю

  • @woobjun2582
    @woobjun2582 6 месяцев назад +2

    Thanks, but it is too long.
    Once you got 'ab = 3' then you could substitute into the given 'a-b = 2' which would yield 'a^2 - 2a - 3 = 0', thus a = -1 and +3. Finally x+13 = (-1)^3 and (3)^3, that is, x = -14 and +14.

  • @prime423
    @prime423 4 месяца назад +1

    Carefully peruse this equation. There are two cube roots that differ by two. Its easy to find 14 as an answer. Sometimes inspiration is better than perspiration!!

  • @PedroOrtiz-sh8hs
    @PedroOrtiz-sh8hs 6 месяцев назад +2

    Great solution

  • @murvetaykac7041
    @murvetaykac7041 6 месяцев назад +2

    I think you can solive this problema with a_b=2 and a.b=3.thank you very much.

  • @cachotrelles4715
    @cachotrelles4715 6 месяцев назад +4

    La explicación paso a paso, larga, pero aclara muchas dudas y hace razonar para bien. Gracias 👌👏👏

    • @VestalNumbre
      @VestalNumbre 6 месяцев назад

      Imagine everlasting life 5:47 + 16 All Scripture is inspired of God+ and beneficial for teaching,+ for reproving, for setting things straight,+ for disciplining in righteousness,+ 17

    • @cachotrelles4715
      @cachotrelles4715 6 месяцев назад

      Bueno, me apasionan las matemáticas, y en ese idioma puedo hablar, también en castellano....y nada más, disculpas.

  • @bilalkaftar2358
    @bilalkaftar2358 6 месяцев назад +3

    İ think you chose the largest way 😂
    A*2+ab+b2=13
    A-b=2
    (A-b)^2=a^2+b^2-2ab =4
    3ab=9 a.b=3
    So (a+b) ^2=16 a+b=4,-4

  • @user-qz3tv5rh2qhz3tv5
    @user-qz3tv5rh2qhz3tv5 6 месяцев назад +1

    короче решается
    зачем город городить, решается за 2 минуты
    имеем 'a-b = 2' находим b = a-2 и сразу подставляем в 'a^2 + 2ab +b^2 = 13 самом начале
    решаем квадратное уравнение и находим a = -1 и +3.
    затем возводим a^3 = x+13 и решаем находим x

  • @manfromexistence
    @manfromexistence 6 месяцев назад +2

    Love from Bangladesh ❤❤❤

  • @zvonimirkujundzic6867
    @zvonimirkujundzic6867 5 месяцев назад +1

    Verry nice! As always!❤

  • @user-cl7or7qp5t
    @user-cl7or7qp5t 6 месяцев назад +2

    You ought have applied quadratic solution from where you got ab=3 and a-b=3 to abridge the long route but great work

    • @smitpatel5107
      @smitpatel5107 6 месяцев назад

      Yes, I was also thinking that.... He perhaps wants to make his video longer... 😅😅

  • @davisnganga6266
    @davisnganga6266 6 месяцев назад +2

    Lovely solution

  • @Dingbat60
    @Dingbat60 6 месяцев назад +1

    Bravo!

  • @comdo777
    @comdo777 6 месяцев назад +2

    asnwer=13 /2

  • @carlosfrei7318
    @carlosfrei7318 6 месяцев назад +3

    Bye Bye

  • @walterwen2975
    @walterwen2975 6 месяцев назад +2

    x = 14 or x = - 14

    • @sweeper201
      @sweeper201 6 месяцев назад

      Yep. Solved it before the video even loaded

  • @user-nd7th3hy4l
    @user-nd7th3hy4l 2 месяца назад

    X=14

  • @hiiralunaa
    @hiiralunaa 6 месяцев назад +1

    wait i don't get it. why do we have to do the expansion at 4:45?

  • @samuelbenet007
    @samuelbenet007 6 месяцев назад +1

    Il est faux de dire que √16 = ±8, la racine d'un nombre étant toujours positif, il faut dire ±√16 = ±8, je remarque que tu fais souvent la même erreur 🙄🙄

  • @ernstdamm266
    @ernstdamm266 6 месяцев назад

    Зачем городить такой огород? Решается элементарнр заменй переменной x´+13´=t^3.

  • @Afari.MadSleuthExportedSalt
    @Afari.MadSleuthExportedSalt Месяц назад

    yellow dogs r insane