x1 = (90 - 2sqrt(1965)) / 15
x2 = (90 + 2sqrt(1965)) / 15
Пошаговое объяснение:
x^2 + 2/3 - 12x - 8/5 = -2
x^2 - 14/15 - 12x = -2
15x^2 - 14 - 180x = -30
15x^2 - 14 -180x + 30 = 0
15x^2 - 180x + 16 = 0
x1 = (90 - 2sqrt(1965)) / 15
x2 = (90 + 2sqrt(1965)) / 15
