Объяснение:
(x - 1)(x + 2) - x(x - 8) + 5 = x + 4
x² + 2x -x - 2 - x² + 8x + 5 = x + 4
9x + 3 = x + 4
9x - x = 4 - 3
8x = 1
x = 1/8
Объяснение:
(x - 1)(x + 2) - x(x - 8) + 5 = x + 4
x² + 2x -x - 2 - x² + 8x + 5 = x + 4
9x + 3 = x + 4
9x - x = 4 - 3
8x = 1
x = 1/8