Ответы и объяснения

  • Участник Знаний
2013-05-14T16:52:13+04:00

V - 24 - 11X = - X

V - 24 - 11X = V X^2

X^2 + 11X + 24 = 0

D = 121 - 4*24 = 121 - 96 = 25

X1 = - 11 + 5 \2 = - 6\2 = - 3

X2 = - 11 - 5 /2 = - 8

ПРИМЕР 2

V - 18 - 11 X = - X

V - 18 - 11X = V X^2

X^2 + 11X + 18 = 0

D = 121 - 4*18 = 121 - 72 = 49

X1 = - 11 - 7 \ 2 = - 9

X2 = - 11 + 7 \ 2 = - 2