а) (3 + 6 + 2) (3 - 6 - 2) = 11 -5 = -55
б) (5 10 25) / (5^2 + 10^2 + 25^2) = 1250 / (25 + 100 + 625) = 1250 / 750 = 1.67
а) (3 + 6 + 2) (3 - 6 - 2) = 11 -5 = -55
б) (5 10 25) / (5^2 + 10^2 + 25^2) = 1250 / (25 + 100 + 625) = 1250 / 750 = 1.67