Alright, lets get started.
When teh function is above the x axis, it is said to be positive.
When the function is below the x axis, it is said to be negative.
Now, looking at the graph provided with question, from -8 to -6, the function is above the x axis.
After -6, function goes below the x axis till -2.
In between -2 to 4, function again goes above x axis.
Means two times function goes above the x axis.
Between -8 to -6
Between -2 to 4
Hence there are two intervals where function is positive.
[tex] [-8,-6)and(-2,4) [/tex]
Hope it will help :)
