document.write( "Question 330853: I seem to be having some trouble with inequalities.
\n" ); document.write( "Its a really simple problem but I keep finding no solution I could really use some help.\r
\n" ); document.write( "\n" ); document.write( "x2 - 9 > 0\r
\n" ); document.write( "\n" ); document.write( "A x < -3 or x > 3
\n" ); document.write( "B -3 < x < 3
\n" ); document.write( "C x < -3 or x > 2
\n" ); document.write( "D-3 < x < 2
\n" ); document.write( "E -2 < x < 4.5
\n" ); document.write( "F for all x
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Algebra.Com's Answer #237175 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
\"+x%5E2+-+9+%3E+0\"
\n" ); document.write( "\"%28x-3%29%28x%2B3%29%3E0\"
\n" ); document.write( "Break up the number line into 3 regions.
\n" ); document.write( "Region 1:(\"-infinity\",\"-3\")
\n" ); document.write( "Region 2:(\"-3\",\"3\")
\n" ); document.write( "Region 3:(\"3\",\"infinity\")
\n" ); document.write( "Pick a point in each region (not an endpoint).
\n" ); document.write( "Test the inequality.
\n" ); document.write( "If the inequality is satisfied, the region is part of the solution.
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\n" ); document.write( "Region 1: \"x=-4\"
\n" ); document.write( "\"%28x-3%29%28x%2B3%29%3E0\"
\n" ); document.write( "\"%28-4-3%29%28-4%2B3%29%3E0\"
\n" ); document.write( "\"%28-7%29%28-1%29%3E0\"
\n" ); document.write( "\"7%3E0\"
\n" ); document.write( "True, this region is part of the solution.
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\n" ); document.write( "Region 2: \"x=0\"
\n" ); document.write( "\"%28x-3%29%28x%2B3%29%3E0\"
\n" ); document.write( "\"%28-3%29%283%29%3E0\"
\n" ); document.write( "\"-9%3E0\"
\n" ); document.write( "False, this region is not part of the solution.
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\n" ); document.write( "Region 3: \"x=4\"
\n" ); document.write( "\"%28x-3%29%28x%2B3%29%3E0\"
\n" ); document.write( "\"%284-3%29%284%2B3%29%3E0\"
\n" ); document.write( "\"%281%29%287%29%3E0\"
\n" ); document.write( "\"7%3E0\"
\n" ); document.write( "True, this region is part of the solution.
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\n" ); document.write( "(\"-infinity\",\"-3\")U(\"3\",\"infinity\")
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\n" ); document.write( "Graphically, look for the regions where the function is greater than zero (above the x-axis).
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