làm hộ vs 3^6 . 45^4 -15^3 . 5^-9/ 27^4 . 25^3 +45^6

Question

làm hộ vs 3^6 . 45^4 -15^3 . 5^-9/ 27^4 . 25^3 +45^6

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Kennedy 3 tháng 2021-09-19T18:32:07+00:00 2 Answers 6 views 0

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    0
    2021-09-19T18:33:15+00:00

    $\dfrac{3^6.45^4-15^3.5^{-9}}{27^4.25^3+45^6}$

    $=\dfrac{3^6.(3^2.5)^4-(3.5)^3.5^{-9}}{(3^3)^4.(5^2)^3+(3^2.5)^6}$

    $=\dfrac{3^6.3^85^4-3^3.5^3.5^{-9}}{3^{12}.5^6+3^{12}.5^6}$

    $=\dfrac{3^{14}.5^4-3^3.5^{-6}}{2.3^{12}.5^6}$

    $=\dfrac{3^2.5^{-2}-3^{-9}5^{-12}}{2}$

    0
    2021-09-19T18:33:30+00:00

    đây nè

     

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