document.write( "Question 553110: Solve:\r
\n" ); document.write( "\n" ); document.write( "\"+2+%2F%28x%5E2-1%29+%3E=+-3+\"\r
\n" ); document.write( "\n" ); document.write( "Include a sketch to support answer.\r
\n" ); document.write( "\n" ); document.write( "I isolated x to get\"sqrt+%28+3+%29%2F3\" and \"-sqrt%28+3+%29%2F3\" but I don't understand how x is greater than or equal to \"sqrt+%283%29%2F3\" and less than or equal to \"-sqrt%28+3+%29%2F3\". I also don't know how to do the sketch.
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Algebra.Com's Answer #360691 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
Solve:
\n" ); document.write( "2 /(x^2-1) >= -3
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\n" ); document.write( "x cannot be -1 ; x cannot be +1
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\n" ); document.write( "Draw a number line and plot x = -1 and x = 1
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\n" ); document.write( "Solve the Equality:
\n" ); document.write( "2 = -3(x^2-1)
\n" ); document.write( "2 = -3x^2+3
\n" ); document.write( "3x^2 = 1
\n" ); document.write( "x^2 = 1/3
\n" ); document.write( "x = +-sqrt(3/3)
\n" ); document.write( "------
\n" ); document.write( "Plot those values on the number line.
\n" ); document.write( "--------------
\n" ); document.write( "You now have values at -1, -1/sqrt(3), 1/sqrt(3), +1
\n" ); document.write( "Find the solution set by testing a value in each
\n" ); document.write( "of the resulting 5 intervals:
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\n" ); document.write( "2 /(x^2-1) > -3
\n" ); document.write( "Test x = -10:: 2/(99)> -3 ; true ; solutions in (-oo,-1)
\n" ); document.write( "Test x = -3/4 ; 2/(-7/16) > -3 ; false
\n" ); document.write( "Test x = 0 ; 2/-1 > -3 ; true ; solutions in [-sqrt(1/3),sqrt(1/3]
\n" ); document.write( "Test x = +3/4 ; 2/(-7/15) > false
\n" ); document.write( "Test x = 10 ; 2/99 > -3 ; true ; solutions in (1,+oo)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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