Question

tìm x

x/4 : 2 =4 : x/2

Nhanh lên nha, đg cần gấp, please!!!

Answer 1

\(\frac{x}{4}:2=4:\frac{x}{2}\)

\(\Leftrightarrow\frac{x}{8}=\frac{8}{x}\)

\(\Leftrightarrow x^2=64\)

\(\Rightarrow\left[\begin{array}{nghiempt}x=8\\x=-8\end{array}\right.\)

Vậy \(x\in\left\{8,-8\right\}\)

Answer 2

 

x/4 : 2 =4 : x/2

=>x/4 . 1/2 = 4.2/x

=>x/8=8/x

=> x.x=8.8

=>x^2=64

=>x=8 , x =-8

 

Answer 3

\(\frac{x}{4}\) : 2 = 4 : \(\frac{x}{2}\)

\(\Rightarrow\) \(\frac{x}{4}.\frac{x}{2}\) = 4 . 2

\(\Rightarrow\) \(\frac{x^2}{8}\) = 8

\(\Rightarrow x^2\) = 8 . 8

\(\Rightarrow x^2\) = 64

\(\Rightarrow\) x = 8 hoặc x = -8