Помогите решить плизНомер 71 2)

X2 + 6x + 5 = 0
D = b2 - 4ac = 62 - 415 = 36 - 20 = 16x1 =   -6 - 16 /21  =   -6 - 4 /2  =   -10 /2  = -5x2 =   -6 + 16 /21  =   -6 + 4 /2  =   -2 /2  = -1

x2 - 6x - 11 = 0
D = b2 - 4ac = (-6)2 - 41(-11) = 36 + 44 = 80x1 =   6 - 80/21  = 3 - 25 -1.4721359549995796x2 =   6 + 80 /21  = 3 + 25 7.47213595499958