̀̀̀̀̀̀̀̀̀̀̀̀̀̀[5^123+5^124+5^125]:[5^120+5^121+5^122]

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̀̀̀̀̀̀̀̀̀̀̀̀̀̀[5^123+5^124+5^125]:[5^120+5^121+5^122]

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Calantha 6 years 2020-10-28T07:28:11+00:00 1 Answers 95 views 0

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  1. Eirian
    0
    2020-10-28T07:29:15+00:00
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    Đáp án: $125$.

    Giải thích các bước giải:

    $\dfrac{5^{123} + 5^{124} + 5^{125}}{5^{120} + 5^{121} + 5^{122}}$

    $= \dfrac{5^{123}.(1+5^1 + 5^2)}{5^{120}.(1 + 5^1 + 5^2)}$

    $= \dfrac{5^{123}}{5^{120}}$

    $= 5^3$

    $= 125$.

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