(a - 50)^2 - a(99a - 100) при a = 3sqrt(3)
(a - 50)^2 - a(99a - 100) = a^2 - 100a + 2500 - 99a^2 + 100a = 2500 - 98a^2 При a = 3sqrt(3) = sqrt(27) получается: 2500 - 98*(sqrt(27))^2 = 2500 - 98*27 = 2500 - 100*27 + 2*27 = 2500 - 2700 + 54 = -146