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

Toán Lớp 6: 4^(2x+1)=74 Giải giùm mk nha ❤????❤

Toán Lớp 6: 4^(2x+1)=74
Giải giùm mk nha ❤????❤

Comments ( 2 )

  1. Xin hay nhất nhé tus^^
    * Sửa đề: $4^{2x + 1}$ = 74
    → $4^{2x + 1}$ = 64  
    $4^{2x + 1}$ = $4^{3}$
    ⇔ $\text{2x + 1 = 3}$
         $\text{2x = 3 – 1}$
         $\text{2x = 2}$
         $\text{x = 2 : 2}$
         $\text{x = 1}$
    Vậy $\text{x = 1}$

  2. $@Yuu$
    Xin phép sửa đề^^
    $4^{(2x+1)}=64$
    $4^{(2x+1)}=4^3$ 
    $2x+1=3$
    $2x=3-1$
    $2x=2$
    $x=2:2$
    $x=1$
    Vậy $x=1$

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