$$ 1)\:h^9h^5 = $$ $$ 2)\: \frac{p^3}{p^8} = $$ $$ 3)\: k^2 : k^2 = $$ $$ 4)\: (n^3)^8 = $$ $$ 5)\: a^6 \cdot k^6 = $$ $$ 6)\: (\frac{t}{a})^7 = $$ $$ 7)\:d^8d^8 = $$ $$ 8)\: \frac{s^2}{s^3} = $$ $$ 9)\: s^4 : s^2 = $$ $$ 10)\: (h^7)^9 = $$ $$ 11)\: v^7 \cdot p^7 = $$ $$ 12)\: (\frac{x}{c})^5 = $$