SOLUTION: Solve. (x + 17)(x

SOLUTION: Solve. (x + 17)(x - 8)(x + 8) > 0

Question 133008: Solve.
(x + 17)(x - 8)(x + 8) > 0
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Solve.
(x + 17)(x - 8)(x + 8) > 0
-----------------------------
Draw a number line:
Plot the points x= -17, x= -8, x= 8 on the line.
-----------------------------
Check a test point in each interval to see where the solutions lie:
Test -20: (-)(-)(-) < 0 , so no solutions in (-inf,-17)
Test -10: (+)(-)(-) > 0 . so solutions in (-17,-8)
Test 0 : (+)(-)(+) < 0 , so no solutions in (-8,8)
Test 10 : (+)(+)(+) > 0 , so solutions in (8,+inf)
------------------------
Final Solution: (-17,-8)U(8,+inf)
Cheers,
Stan H.
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