Ta có: \(\frac{6\frac{1}{4}}{x}=\frac{x}{1,96}\)
\(\left(=\right)\frac{\frac{25}{4}}{x}=\frac{x}{1,96}\)
\(\left(=\right)x^2=12,25\)
\(=>\orbr{\begin{cases}x=3,5\\x=-3,5\end{cases}}\)
học tốt
đk \(x\ne0\)
\(\frac{6\frac{1}{4}}{x}=\frac{x}{1,96}\)
\(\Leftrightarrow x^2=12,25\)
\(\Leftrightarrow x=\pm3,5(Tm)\)
\(6\frac{1}{\frac{4}{x}}=\frac{x}{1.96}=>\frac{25}{\frac{4}{x}}=\frac{x}{1.96}\)
=> x*x=\(\frac{25}{4}\cdot1.96\)=12.25
=>x=3.5