решите уравнение:
3х³-7х²-7х+3=0

вот и все . все решено верно

3x³ - 7x² - 7x + 3 = 03(x³ + 1) - 7x(x + 1) = 03(x + 1)(x² - x + 1) - 7x(x + 1) = 0(x + 1)(3x² - 3x + 3) - 7x(x + 1) = 0(x + 1)(3x² - 3x + 3 - 7x) = 0x + 1 = 03x² - 10x + 3 = 0x = -1D = 100 - 3•3•4 = 64 = 8²х1 = (10 + 8)/6 = 3х2 = (10 - 8)/6 = 1/3Ответ: х = -1; 1/3; 3.