Question

tìm x biết:[18-4.x]^3=1000

Answer 1

`[18-4.x]^3=1000`

`=>[18-4.x]^3=10^3`

`=>18 -4 . x=10`

`=>4 . x=18-10`

`=>4.x=8`

`=>x=8:4`

`=>x=2`

vậy `x=2`

Answer 2

 

${}^{}=1000$

$\Rightarrow {}^{}={}^{}$

$\Rightarrow 18-4.x=10$

$\Rightarrow 4.x=18-10$

$\Rightarrow 4.x=8$

$\Rightarrow x=8:4$

$\Rightarrow x=2$

vậy $x=2$

Answer 3

 

${}^{}=1000$

$\Rightarrow {}^{}={}^{}$

$\Rightarrow 18-4.x=10$

$\Rightarrow 4.x=18-10$

$\Rightarrow 4.x=8$

$\Rightarrow x=8:4$

$\Rightarrow x=2$

vậy $x=2$