Question 467415
Could you please help me with this? I have a huge final this week. I believe the answer is they are all real numbers. Am I correct? Thanks for all your help!! 
(x+8)(x-13)(x+3)>0
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1st: Find the values x cannot take: x = -8, x = 13, x = -3
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2nd: Draw a number line and plot those value thur forming
4 intervals of the number line.
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3rd: Test a value from each of the intervals in the inequality to 
see where the solutions are:
Test x = -10: -*-*- >0; false
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Test x = -5: +*-*- > 0; true so solutions in (-8,-3)
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Test x = 0: +*-*+ > 0 ; false
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Test x = 20: +*+*+ > 0; true so solutions in (13,oo)
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Solustions: (-8,-3) or (13,oo)
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Cheers,
stan H.