Tìm x $\frac{2}{x}$ = $\frac{x}{8}$

2 câu trả lời

`2/x = x/8`

`=> x . x = 8 . 2`

`=> x^2 = 16`

`=> x^2 = 4^2`

`=> x = ±4`

Vậy `x = ±4`

`#dtkc`

 

$\dfrac{2}{x}=\dfrac{x}{8}$

$⇒ 2.8=x.x$

$⇒ 16=x^2$

$⇒ (±4)^2=x^2$

$⇒ x=±4$

Vậy $x=±4$

$#thanhmaii2008$