(10x² - 6x + 5x - 3) - (10x² - 15x + 8x - 12) = -3
10x² - x -3 - 10x² + 7x +12 = -3
6x + 9 =-3
3(2x + 3) = -3
2x + 3 = -1
2x = -4
x = -2
ответ: -2.
(10x² - 6x + 5x - 3) - (10x² - 15x + 8x - 12) = -3
10x² - x -3 - 10x² + 7x +12 = -3
6x + 9 =-3
3(2x + 3) = -3
2x + 3 = -1
2x = -4
x = -2
ответ: -2.
(10x² - 6x + 5x - 3) - (10x² - 15x + 8x - 12) = -3
10x² - x -3 - 10x² + 7x +12 = -3
6x + 9 =-3
3(2x + 3) = -3
2x + 3 = -1
2x = -4
x = -2