Ответ:
\((2\sqrt{5})^2=2^2\cdot(\sqrt{5})^2=4\cdot5=20\).
\(\frac{20}{160}=\frac18\).
\((4\sqrt{2})^2=4^2\cdot(\sqrt{2})^2=16\cdot2=32\).
\(\frac{96}{32}=3\).
Ответ: а) \(\frac18\); б) 3.
\((2\sqrt{5})^2=2^2\cdot(\sqrt{5})^2=4\cdot5=20\).
\(\frac{20}{160}=\frac18\).
\((4\sqrt{2})^2=4^2\cdot(\sqrt{2})^2=16\cdot2=32\).
\(\frac{96}{32}=3\).
Ответ: а) \(\frac18\); б) 3.