Дана геометрическая прогрессия \(\displaystyle 1{ \small ,}\, 3{ \small ,}\, 9{ \small ,}\, …\)
Сравните \(\displaystyle b_{8} \cdot b_{10}\) и \(\displaystyle b_{9}^2{\small .}\)
\(\displaystyle b_{8} \cdot b_{10}\) [?|<|>|=] \(\displaystyle b_{9}^2{\small .}\)