Can anyone answer and explain the question: Find the intervals on which x satisfies x2+8x>0

Factor out x and use the fact that the product is positive iff both factors have the same sign.

Is this the right answer? im unsure of what the correct answer format is

x<-8 makes expression positive
-8<x<0 makes expression negative
0<x makes expression positive

Originally Posted by emakarov
Factor out x and use the fact that the product is positive iff both factors have the same sign.
Is this the right answer? im unsure of what the correct answer format is

x<-8 makes expression positive
-8<x<0 makes expression negative
0<x makes expression positive