SOLUTION: Hi need some help with solving this problem. Solve, (x+11)(x-9)(x+3)>0 the solution set is {x|___

SOLUTION: Hi need some help with solving this problem. Solve, (x+11)(x-9)(x+3)>0 the solution set is {x|____}. Thank you :o)

Question 356179: Hi need some help with solving this problem.
Solve,
(x+11)(x-9)(x+3)>0 the solution set is {x|____}.
Thank you :o)
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Break up the number line into 4 regions using the critical points of the function.
Region 1:(,)
Region 2:(,)
Region 3:(,)
Region 4:(,)
.
.
.
For each region, choose a point in the region (not an endpoint).
Test the inequality.
If the inequality is satisfied, the region is part of the solution region.
.
.
Region 1:Choose

False, Region 1 is not part of the solution region.
.
.
Region 2:Choose

True, Region 2 is part of the solution region.
.
.
Region 3:Choose

False, Region 3 is not part of the solution region.
.
.
Region 4:Choose

True, Region 4 is part of the solution region.
.
.
Solution Region: (,) U (,)
.
.
.
Graphical verification: Look for regions where the function is above the x-axis ()
.
.
.

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