c) (2^2 + 3 * 2^2) : 2^4 = 4 * 2^2 : 2^4 = 2^2 * 2^2 : 2^4 = 1
d) (2,5)^2 - 2 * (3/2)^2 + (-3)^2 = (5/2)^2 - 2 * (1/3)^2 + 9 = 25/4 - 2 * 1/9 + 9 = 25/4 - 2/9 + 9 = 541/36 = 15 całych i 1/36