Odpowiedź :
(x + 4)(-x - 5)(2x + 6) = 0
x + 4 = 0
x = -4
-x - 5 = 0
x = -5
2x + 6 = 0
2x = -6
x = -3
[tex](x+4)(-x-5)(2x+6) = 0\\\\-2(x+4)(x+5)(x+3) = 0 \ \ /:(-2)\\\\(x+4)(x+5)(x+3) = 0\\\\x+4 = 0 \ \vee \ x+5 = 0 \ \vee \ x+3 = 0\\\\x = -4 \ \vee \ x = -5 \ \vee \ x = -3\\\\x \in \{-5,-4,-3\}[/tex]