SOLUTION: I seem to be having some trouble with inequalities. Its a really simple problem but I keep finding no solution I could really use some help. x2

SOLUTION: I seem to be having some trouble with inequalities. Its a really simple problem but I keep finding no solution I could really use some help. x2 - 9 > 0 A x < -3 or x > 3 B

Question 330853: I seem to be having some trouble with inequalities.
Its a really simple problem but I keep finding no solution I could really use some help.
x2 - 9 > 0
A x < -3 or x > 3
B -3 < x < 3
C x < -3 or x > 2
D-3 < x < 2
E -2 < x < 4.5
F for all x
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

Break up the number line into 3 regions.
Region 1:(,)
Region 2:(,)
Region 3:(,)
Pick a point in each region (not an endpoint).
Test the inequality.
If the inequality is satisfied, the region is part of the solution.
.
.
.
Region 1:

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

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

True, this region is part of the solution.
.
.
.
(,)U(,)
.
.
.
Graphically, look for the regions where the function is greater than zero (above the x-axis).
.
.
.

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