Ответ Автор - Sergey7A (8+3√2)*(8-√18) = (8+3√2)*(8-3√2) = 64 - 18 = 46(√7-√5)*(√63+3√5) = (√7-√5)*(3√7+3√5) = 3(√7-√5)*(√7+√5) = 3(7 - 5) = 6