Решите задание 4

β = 3/11 * p^2 + 15/22 * p, при p = 19/25: β = 3/11 * (19/25)^2 + 15/22 * 19/25 = 3/11 * 361/625 + 285/550 = 1083/6875 + 171/550 = 2967/6875.