Question

tim x bik

x/16=1/x

Answer 1

Vì x/16 = 1/x

\(\Leftrightarrow x.x=16.1\Leftrightarrow2x=16.1\Rightarrow x=\frac{16.1}{2}=\frac{16}{2}=8\)

Vậy x = 8

Answer 2

\(\frac{x}{16}=\frac{1}{x}\Rightarrow x^2=16\Rightarrow x=+_-4\)

Answer 3

=>x.x=16.1

     x²=16

TH1:x=4             TH2:x= -4