document.write( "Question 170892: Can you please help show me how to solve this quadratic equation by completing the square.\r
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document.write( "x^2 + 4x - 12 = 0 \n" );
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Algebra.Com's Answer #126168 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! solve this quadratic equation by completing the square. \n" ); document.write( "x^2 + 4x - 12 = 0 \n" ); document.write( "---- \n" ); document.write( "x^2 + 4x + ? = 12 + ?\r \n" ); document.write( "\n" ); document.write( "x^2 + 4x + (4/2)^2 = 12 + (4/2)^2\r \n" ); document.write( "\n" ); document.write( "x^2 + 4x + 4 = 12 + 4 \n" ); document.write( "(x+2)^2 = 16\r \n" ); document.write( "\n" ); document.write( "x+2 = 4 or x+2 = -4 \n" ); document.write( "x = 2 or x = -6 \n" ); document.write( "===================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |