Вычисли

Для каждого \(a \kern{0.27em}{=}\mathllap{/\,}\kern{0.27em} 0\) и любых целых \(m\) и \(n\)

\(a^m \cdot a^n = a^{m+n}\) ;

\(a^m : a^n = a^{m-n}\) ;

\(\left(a^m\right)^n = a^{mn}\) .

Для каждого \(a \kern{0.27em}{=}\mathllap{/\,}\kern{0.27em} 0\) и \(b \kern{0.27em}{=}\mathllap{/\,}\kern{0.27em} 0\) и любого целого \(n\)

\(\left(ab\right)^n = a^n b^n\) ;

\(\left(\dfrac ab\right)^n = \dfrac {a^n} {b^n}\) .

1. \(2^6:2^8=\) [ ].
2. \(\left (7^3\right )^{-2}\cdot 7^7=\) [ ].
3. \(5^3\cdot 5^{-5}\cdot 5^4=\) [ ].
4. \(\left (\dfrac{1}{4}\right )^{-3}\cdot \left(\dfrac{1}{4}\right)^2=\) [ ].
5. \(\left (0,2^{-2}\right )^{-2}=\) [ ].
6. \(\left (\dfrac{2}{3}\right )^{-4}:\left (\dfrac{2}{3}\right )^{-2}=\) [ ].