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

Toán Lớp 6: 2^x+1-2^x=64 mn làm giúp mik

Toán Lớp 6: 2^x+1-2^x=64 mn làm giúp mik

Comments ( 2 )

  1. 2^(x + 1) – 2^x = 64
    2^x . 2^1 – 2^x = 64
    2^x . (2^1 – 1) = 64
    2^x . (2 – 1) = 64
    2^x . 1 = 64
    2^x = 64 . 1
    2^x = 64
    2^x = 2^6
    => x = 6
    Vậy x = 6

  2. $\text{$2^{x+1}$-$2^{x}$=64}$
    $\text{$2^{x}$+$2^{x}$-$2^{x}$=64}$
    $\text{$2^{x}$=64}$
    $\text{$2^{x}$=$2^{6}$}$
    $\text{Vậy x=6}$
     

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