Question

Мне нужен ответ на 11 вопрос

Answer 1

$x {}^{3} + 2x {}^{2} - x - 2 = 0 \\ x {}^{2} \times (x + 2) - (x + 2) = 0 \\ (x + 2) \times (x {}^{2} - 1) = 0 \\ x + 2 = 0 \\ x {}^{2} - 1 = 0 \\ x = - 2 \\ x = - 1 \\ x = 1 \\ x1 = - 2.x2 = - 1.x3 = 1$

Ответ:А) -2; -1; 1