19.5. Вычислите.

a) 3^5 + 4^4 + 8^0 = 243 + 256 + 1 = 500. б) (2/3)^2 + (1/2)^3 + (7/8)^0 = 4/9 + 1/8 + 1 = 1.389. в) 3^0 * 2^5 - 15^2 = 1 * 32 - 225 = -193. г) (1.5)^3 + 4^4 + 15^0 = 3.375 + 256 + 1 = 260.375.