Ответ:-(x-2)(9-x)(x+10)>0
(x-2)(x-9)(x+10)>0
x=2 x=9 x= -10
- + - +
--------- -10 ---------- 2 ------------- 9 -----------
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(-∞; -10) x= -11 - - - | -
(-10; 2) x=0 - - + | +
(2; 9) x=3 + - + | -
(9; +∞) x=10 + + + | +
x∈(-10; 2)U(9; +∞)
Объяснение: