\(\frac{2}{x}=\frac{x}{8}\Rightarrow x^2=16=4^2\Rightarrow\orbr{\begin{cases}x=4\\x=-4\end{cases}}\)
\(A=\frac{4116-14}{10290-35}=\frac{4102}{10255}=\frac{2}{5}\)
3, \(\frac{2}{x}\)=\(\frac{x}{8}\)
Suy ra : x . x = 2 . 8
x2 = 16
x2= 42 hoặc x2 = (-4)2
Suy ra x=4 hoặc x=-4
A=\(\frac{4116-14}{10290-35}\)=\(\frac{4102}{10255}\)=\(\frac{2}{5}\)
\(\frac{2}{x}=\frac{x}{8}=>x\cdot x=2\cdot8=>x^2=16\)\(=>x=4;x=-4\)
\(A=\frac{4116-14}{10290-35}=\frac{4102}{10255}=\frac{2}{5}\)