document.write( "Question 979580: solve for x:\r
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document.write( "2/x+4 - 1/x+3 = 1 - 2/x^2+7x+12\r
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document.write( "please help homework for tomorrow \n" );
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Algebra.Com's Answer #600871 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! solve for x:\r \n" ); document.write( "\n" ); document.write( "2/x+4 - 1/x+3 = 1 - 2/x^2+7x+12 \n" ); document.write( "------------- \n" ); document.write( "Find a common denominator. \n" ); document.write( "x^2+7x+12 = (x+4)*(x+3) so that will work. \n" ); document.write( "---- \n" ); document.write( "2(x+3)/DEN - (x+4)/DEN = (x^2+7x+12 - 2)/DEN \n" ); document.write( "Multiply thru by the DEN \n" ); document.write( "2x+6 -x-4 = x^2+7x+10 \n" ); document.write( "x+2 = x^2+7x+10 \n" ); document.write( "x^2 + 6x + 8 = 0 \n" ); document.write( "(x+2)*(x+4) = 0 \n" ); document.write( "x = -2 \n" ); document.write( "------------ \n" ); document.write( "x = -4 \n" ); document.write( "*********** x=-4 make the DEN of the 1st term zero, so it's not allowed. \n" ); document.write( " \n" ); document.write( " |