X+6 +x^2 /(x^2+2x+1)≤0
(x+6 ) *(x+1)^2+x^2≤0; (x+1)^2>0; x≠-1
x+6≤0; x≤-6
2) (3x-x^2)(x^2+2x-8)>0; x^2+2x-8=0; D/4=(-1)^2-1*(-8)=9=3^2;
-x(x-3)(x+4)(x-2)>0 x1=-1-3=-4; x2=-1+3=2
x(x-3)(x+4)(x-2)<0<br>x=0; x=3; x=-4;x=2 x^+2x-8=(x+4)(x-2)
+ - + - +
------------(-4)--------0------------2------------3------------>x
///////////// //////////////// x⊂(-4;0) ∪(2;3)
Ответ (-4;0)∪(2;3)