Question

решите уравнение
−x^2-x+2=0

Answer 1

$- x {}^{2} - x + 2 = 0 \\ - x {}^{2} + x - 2x + 2 \\ - x \times (x - 1) - 2(x - 1) \\ - (x - 1) \times (x + 2)$

вот