Ответ:
\((\sqrt{5})^{12}=5^6=15625\).
\(\sqrt{70}\cdot\sqrt{30}=\sqrt{2100}=10\sqrt{21}\).
\(\sqrt{76}=2\sqrt{19}\).
Следовательно,
\[\frac{(\sqrt{5})^{12}-\sqrt{70}\cdot\sqrt{30}}{\sqrt{76}}=\frac{15625-10\sqrt{21}}{2\sqrt{19}}.\]
Ответ: \(\dfrac{15625-10\sqrt{21}}{2\sqrt{19}}\).
