document.write( "Question 1168423: For the function g(x)=x+8/x+2, solve the following inequality.
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document.write( "g(x)>0
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Algebra.Com's Answer #793015 by ikleyn(53764) You can put this solution on YOUR website! . \n" ); document.write( " \r\n" );
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document.write( "In order for g(x) be positive, both the numerator and denominator should be EITHER both positive, OR both negative.\r\n" );
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document.write( "So, we consider two cases.\r\n" );
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document.write( "Case (a). x+8 > 0 AND x+2 > 0.\r\n" );
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document.write( " The solution set to these two inequalities is {x > - 8} AND {x > - 2}.\r\n" );
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document.write( " The last two inequalities are EQUIVALENT to one single inequality x > -2.\r\n" );
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document.write( "Case (b). x+8 < 0 AND x+2 < 0.\r\n" );
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document.write( " The solution set to these two inequalities is {x < - 8} AND {x < - 2}.\r\n" );
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document.write( " The last two inequalities are EQUIVALENT to one single inequality x < -8.\r\n" );
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document.write( "Thus the final solution to your problem is this:\r\n" );
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document.write( " {x < -8} or {x > -2},\r\n" );
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document.write( "Or in the interval form\r\n" );
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document.write( " (-oo,-8) U {-2,oo) (union of two sets).\r\n" );
document.write( "\r\n" ); document.write( "\n" ); document.write( "Solved.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |