1) m^7 * m^13 = m^(7+13) = m^20; 2) a^19 * a^6 = a^(19+6) = a^25; 3) b^14 : b^5 = b^(14-5) = b^9; 4) c^7 : c^2 = c^(7-2) = c^5; 5) (a^3)^5 = a^(3*5) = a^15; 6) (d^9)^7 = d^(9*7) = d^63; 7) 3^n * 6^n = (3*6)^n = 18^n; 8) 2^5 * 13^5 = (2*13)^5 = 26^5; 9) (a^3)^7 : a^4 = a^(3*7-4) = a^(21-4) = a^17.