1) (x - 5) (2x + 2) (1 - x) = 0
x - 5 = 0 или 2x + 2 = 0 или 1 - x = 0
x = 5 2x = -2 x = 1
x = -1
2) 3 корня
3) -1
1) (x - 5) (2x + 2) (1 - x) = 0
x - 5 = 0 или 2x + 2 = 0 или 1 - x = 0
x = 5 2x = -2 x = 1
x = -1
2) 3 корня
3) -1