0\\(x+1)(x-3)(x-4)=0 \\ x+1=0\\x=-1\\x-3=0\\x=3\\x-4=0\\x=4 " alt="(x+1)(x-3)(x-4)>0\\(x+1)(x-3)(x-4)=0 \\ x+1=0\\x=-1\\x-3=0\\x=3\\x-4=0\\x=4 " align="absmiddle" class="latex-formula">
- + - +
----------|-----------------|------------------|---------------> x
-1 3 4
x∈
Ответ: C) x∈