Tìm x biết :

2 mũ x : 4 = 16

     `2^x :4=16`

`=> 2^x : 2^2 =2^4`

`=> 2^x =2^4 .2^2`

`=> 2^x =2^6`

`=> x=6`

`Vậy`,` x=6`.

$#2k10kaitokid$