\(AB=6\sqrt{2}\Rightarrow B=\frac{6\sqrt{2}}{A}\)
Thay xuống dưới: \(A^2+\left(\frac{6\sqrt{2}}{A}\right)^2=17\Leftrightarrow A^4-17A^2+72=0\)
\(\Rightarrow\left[{}\begin{matrix}A^2=9\\A^2=8\end{matrix}\right.\) \(\Rightarrow\left[{}\begin{matrix}A=3\\A=-3\\A=2\sqrt{2}\\A=-2\sqrt{2}\end{matrix}\right.\) \(\Rightarrow B=\frac{6\sqrt{2}}{A}=...\)