Question 764030
The function 
f(x)=(x-1)/((x-4)sqrt(x+2)) 
is negative for x in:
***
make a chart:

...TP......(x-1).....(x-4)......(x+2......f(x).
.. -2.......-............-............0..........+
....1........0............-............+..........-
....3........+............-............+..........-
.. .4........+...........0............+..........+
. >5.......+...........+.............+.........+
f(x) is negative: [1,4)
Notes:
TP: test point
x≥-2 because of (x+2) radican