please help me solve this equation :
>
+ 
~~~~~~~~~~~~~
The "solutions" from both @CubeyThePenguin and @josgaritmetic are WRONG.
Below I brought the correct solution.
Rewrite it equivalently in this form
-
- 4 > 0
-
- 8 > 0
-
-
> 0 <<<--- now we have common denominator (x+4)
> 0
> 0
> 0
The quadratic polynomial in the numerator has the roots
=
=
=
.
So, the numerator has the roots
=
= -4.782 and
=
= 8.782.
There are three critical points on the number line,
=
= -4.782, -4 and
=
= 8.782.
They divide the number line in 4 intervals, from left to right
(
,
), (
,
), (
,
) and
,
).
The solution set for the given inequality is the union of the second and the fourth intervals.
Solved.