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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 7: 2.6/2+2^3-6^3 Việc hơi nhẹ lương hơi cao

Toán Lớp 7: 2.6/2+2^3-6^3
Việc hơi nhẹ lương hơi cao

Comments ( 2 )

  1. $TH : \dfrac{2.6}{2}+2^3-6^{3}$
     
    $=6+2^3-6^{3}$

    $=6+(2-6)(2^2+2.6+6^2)^{}$ 

    $=6+(-208)^{}$ 

    $=-202^{}$ 

    $TH : \dfrac{2.6}{2+2^3}-6^{3}$

    $=\dfrac{2.6}{2(1+2^2)}-6^{3}$

    $=\dfrac{2.6}{2.5}-6^{3}$

    $=\dfrac{6}{5}-6^{3}$

    $=6(\dfrac{1}{5}-6^2)^{}$

    $=6.\dfrac{-179}{5}^{}$

    $=\dfrac{-1074}{5}^{}$ 

  2. Giải đáp + Lời giải và giải thích chi tiết:
    (2\times6)/(2+2^3-6^3)
    =(2\times6)/(2\times(2^2-6^3))
    =6/2^2-6^3
    =(2\times6)/(2^2-(3\times2)^3)
    =(2\times6)/(2^2-3^3\times2^3)
    =(2\times6)/(2^2\times(1-3^3\times2))
    =6/(2\times(1-3^3\times2))
    =6/(2\times(1-27\times2))
    =6/(2\times(1-54))
    =6/(2\times(-53))
    =6/(-106)
    =(-6)/106
    $#hoangca159357$

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222-9+11+12:2*14+14 = ? ( )