document.write( "Question 228039: solve by completing the square \r
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document.write( "9x^2 +18X=-5\r
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document.write( "can anyone give a full break down why the answer is -1/3, -5/3 confused on how my book got -1/3 as an answer. \n" );
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Algebra.Com's Answer #169379 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! solve by completing the square \r \n" ); document.write( "\n" ); document.write( "9x^2 +18X=-5 \n" ); document.write( "--- \n" ); document.write( "9(x^2+2x+1) = -5+9 \n" ); document.write( "--- \n" ); document.write( "9(x+1)^2 = 4 \n" ); document.write( "--- \n" ); document.write( "(x+1)^2 = 4/9 \n" ); document.write( "---- \n" ); document.write( "x+1 = +2/3 or x+1 = -2/3 \n" ); document.write( "--- \n" ); document.write( "x = -1/3 or x = -5/3 \n" ); document.write( "============================ \n" ); document.write( "Cheers, \n" ); document.write( "Stan H.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "can anyone give a full break down why the answer is -1/3, -5/3 \n" ); document.write( " |