12х^2 - 67х + с = 0
с = - (12х^2 - 67х)
Т.к. х = 7/3, то:
с = - (12 * (7/3)^2 - 67 * 7/3)
с = - (12 * 49/9 - 67 * 7/3)
с = - (588/9 - 469/3)
с = - (588/9 - 1407/9)
с = - (-819/9)
с = 81
ответ: 81
12х^2 - 67х + с = 0
с = - (12х^2 - 67х)
Т.к. х = 7/3, то:
с = - (12 * (7/3)^2 - 67 * 7/3)
с = - (12 * 49/9 - 67 * 7/3)
с = - (588/9 - 469/3)
с = - (588/9 - 1407/9)
с = - (-819/9)
с = 81
ответ: 81