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

Toán Lớp 6: 2 ngũ x+1-2 ngũ x = 64 nhanh nhé ai nhanh nhất cho 5 sao

Toán Lớp 6: 2 ngũ x+1-2 ngũ x = 64 nhanh nhé ai nhanh nhất cho 5 sao

Comments ( 1 )

  1. $2^{ x +1}$ – $2^{x}$  = 64
    ⇒$2^{x}$ .  $2^{x}$ .2=64
    ⇒$2^{x}$ . 2=64
    ⇒$2^{x}$ =64 : 2
    ⇒$2^{x}$=32
    ⇒$2^{x}$=$2^{5}$
    ⇒x=5

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

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