(4-х)³(x+3)(-x-1)³(x-2)²
------------------------------------- ≤0
(-5-x)^4(16-4x)²
х≠-5, х≠4
(4-х)³(x+3)(-x-1)³(x-2)²(-5-x)^4(16-4x)²≤0
(4-х)³(x+3)(-x-1)³(x-2)²(-5-x)^4·(4(4-x))²≤0
16(4-х)^5·(x+3)(-x-1)³(x-2)²(-5-x)^4≤0
х=4 х=-3 х=-1 х=2 х=-5
+ - + - - +
-----------·----------·--------·--------·----------·-------→
-5 -3 -1 2 4
x∈(-5;-3]∪[-1 ;2]∪[2; 4)