Ответы и объяснения

2014-04-07T15:50:58+00:00
2x^2 - 11x - 6 = 0
D = b^2 - 4 * a * x
D  = 11 ^2 - 4 * 2 * (-6) = 169
D = 13

x1 = (11 + 13) / 2 * 2 = 24 / 4 = 6
x2 = (11 - 12) / 2 * 2 = - 2 / 4 = - 1 / 2