Calculate the binding energy for the following two uranium isotopes:
(a) ₉₂²³⁸U, which consists of 92 protons, 92 electrons, and 146 neutrons, with a total mass of 238.0507826 u.
(b) ₉₂²³⁵U, which consists of 92 protons, 92 electrons, and 143 neutrons, with a total mass of 235.0439299 u.