3^2019:(3^2020-24×3^2017)

Question

3^2019:(3^2020-24×3^2017)

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Adela 4 years 2020-11-01T13:37:46+00:00 2 Answers 60 views 0

Answers ( )

  1. giahung
    0
    2020-11-01T13:39:17+00:00
    Reply

    Đáp án:

     $3$

    Giải thích các bước giải:

    $\dfrac{3^{2019}}{3^{2020}-24.3^{2017}}$

    $=\dfrac{3^{2019}}{3^{2017}(3^3-24)}$

    $=\dfrac{3^{2019}}{3^{2017}.3}$

    $=\dfrac{3^{2019}}{3^{2018}}$

    $=3$

  2. Nick
    0
    2020-11-01T13:39:26+00:00
    Reply

    Đáp án: $3$.

    Giải thích các bước giải:

    $3^{2019} : (3^{2020} – 24 . 3^{2017})$

    $= 3^{2019} :[3^{2017} . (3^3 – 24)]$

    $= 3^{2019} : [3^{2017} . (27 – 24)]$

    $= 3^{2019} : (3^{2017} . 3)$

    $= 3^{2019} : 3^{2018}$

    $= 3$.

     

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