10) \(\frac{(2^2 \cdot 2^4)^7}{(2 \cdot 2^6)^6}\);

\(\frac{(2^2 \cdot 2^4)^7}{(2 \cdot 2^6)^6} = \frac{(2^{2+4})^7}{(2^{1+6})^6} = \frac{(2^6)^7}{(2^7)^6} = \frac{2^{6 \cdot 7}}{2^{7 \cdot 6}} = \frac{2^{42}}{2^{42}} = 1\)