SOLUTION: This really has me confused!!! (x+5)(x-20)(x+3) > 0 Thank you for all your help!!!

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Question 250978: This really has me confused!!!
(x+5)(x-20)(x+3) > 0
Thank you for all your help!!!

Found 2 solutions by vksarvepalli, Fombitz:
Answer by vksarvepalli(154)   (Show Source): You can put this solution on YOUR website!
(x+5)(x-20)(x+3) > 0
for this to happen all the three terms must be positive or two positive and one negative ,considering these cases we get the solution set as
x belongs to (-5,-3)u(20,infinity)
you will get a very clear picture if you draw the number line and consider the points -5, -3 and 20.
Answer by Fombitz(32388)   (Show Source): You can put this solution on YOUR website!
Break up the number line into 4 regions.




Pick a number in each region and test the inequality.
First region:



False, not a valid region.
.
.
Second region:



True, a valid region.
.
.
Third region:


False, not a valid region.
.
.
Fourth region:



True, a valid region.
x=(,)U(,)
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