Question

Решите пожалуйста неравенства!!

Answer 1

1)(-∞;2)U(1;5)

2)[1;3]

3) $\frac{x^2-3x+2}{x^2+3x+2} \geq 1\\\\\frac{x^2-3x+2-x^2-3x-2}{x^2+3x+2} \geq 0\\\\\frac{-6x}{x^2+3x+2} \geq 0\\\\\frac{x}{(x+1)(x+2)} \leq  0$

(-∞;-2)U(-1;0]