а) 2^4 * 5^4 = (2 * 5)^4 = 10^4 = 10000, б) 0.25^15 * 4^15 = ((0.25) * 4)^15 = 1^15 = 1, в) 4^3 * 25^3 = (4 * 25)^3 = 100^3 = 1000000, г) ((2/3)^7) * 1.5^7 = ((2 * 1.5) / 3)^7 = (3/3)^7 = 1^7 = 1, д) ((5/7)^10) * 1.49^10 = ((5 * 1.49) / 7)^10 = (7.45 / 7)^10, е) 0.2^6 * 50^7 = ((0.2) * 50)^7 * 0.2^(-1) = 10^7 / 5 = 2 * 10^6.