@Moonnek2008
#Hoidap247
$\text{($2^{x}$.5+10):5 =10}$
$\text{$2^{x}$.5+10 =10.5}$
$\text{ $2^{x}$.5+10 =50}$
$\text{ $2^{x}$.5 =50-10}$
$\text{ $2^{x}$.5 =40}$
$\text{ $2^{x}$ =40:5}$
$\text{ $2^{x}$.5 =8}$
$\text{ $2^{x}$.5 =$2^{3}$}$
→$\text{x=3}$
$\text{Vậy x=3}$
$\text{______________________________________________}$
$\text{($x^{3}$:3+1).2=$2^{2}$.5}$
$\text{($x^{3}$:3+1).2=4.5}$
$\text{($x^{3}$:3+1).2=20}$
$\text{$x^{3}$:3+1 =20:2}$
$\text{$x^{3}$:3+1 =10}$
$\text{$x^{3}$:3 =10-1}$
$\text{$x^{3}$:3 =9}$
$\text{$x^{3}$ =9.3}$
$\text{$x^{3}$ =27}$
$\text{$x^{3}$ =$3^{3}$}$
→$\text{x=3}$
$\text{Vậy x=3}$
