A Nice Radical Equation | Maths Olympiad Question

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  • Опубликовано: 18 ноя 2024

Комментарии • 5

  • @meoww7869
    @meoww7869 16 дней назад +1

    at 1:42 where you cancelled out the square root and the raised to the second power, shoudn't you have taken the absolute value of what was under the square root, leaving you with y instead of -y?

    • @wisfrank-zc6yp
      @wisfrank-zc6yp  15 дней назад +1

      (Sqrt-y)^2, here the power of 2 will cancel the sqrt leaving only -y

  • @olegpetrov2452
    @olegpetrov2452 9 дней назад +1

    y=-i*sqrt(8). To solve you have to take sqrt(y) as c+id, where c and d are real values and i=sqrt(-1)

    • @wisfrank-zc6yp
      @wisfrank-zc6yp  6 дней назад +1

      You are on the right path, that's right

    • @olegpetrov2452
      @olegpetrov2452 6 дней назад

      @@wisfrank-zc6yp More simple. If we take a square of both parts we get 2iy = 16.